Desktop not accepting wireless adapter connection after switching to U-Verse

[midimykeys]

We have always used AT&T's DSL with their 2Wire wireless router. We have 2 desktop computers and a laptop. One of the desktops used a wireless adapter without any problems. The laptop has built-in wifi, and no problems with it, and my desktop had an ethernet connection straight into the router without problems as well. Since the U-Verse installation, all the computers are using wireless adapters now. My desktop will not stay connected through the network adapter. However, the signal always reads either "very good" or "excellent". I copy/pasted the network diagnostic for XP, and it appears to have repeat problems with the TCP port. This message was displayed numerous times on the diagnostic.

TCP port 80 on host 207.46.19.190 could not be reached (Error code 0x274c)

Here are the full diagnostics, thanks for any help or suggestions in advance.
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Last diagnostic run time: 03/13/09 17:49:19 Gateway Diagnostic
Gateway

info The following proxy configuration is being used by IE: Automatically Detect Settings:Disabled Automatic Configuration Script: Proxy Server: Proxy Bypass list:
info This computer has the following default gateway entry(ies): 192.168.1.254
info This computer has the following IP address(es): 192.168.1.72
info The default gateway is in the same subnet as this computer
info The default gateway entry is a valid unicast address
info The default gateway address was resolved via ARP in 1 try(ies)
info The default gateway was reached via ICMP Ping in 1 try(ies)
info TCP port 80 on host 207.46.19.190 could not be reached (Error code 0x274c)
info TCP port 80 on host 207.46.19.254 could not be reached (Error code 0x274c)
warn The Internet host www.microsoft.com could not be reached
action Automated repair: Renew IP address
action Releasing the current IP address...
action Successfully released the current IP address
action Renewing the IP address...
action Successfully renewed the current IP address
info This computer has the following default gateway entry(ies): 192.168.1.254
info This computer has the following IP address(es): 192.168.1.72
info The default gateway is in the same subnet as this computer
info The default gateway entry is a valid unicast address
info The default gateway address was resolved via ARP in 1 try(ies)
info The default gateway was reached via ICMP Ping in 1 try(ies)
info TCP port 80 on host 207.46.19.254 could not be reached (Error code 0x274c)
info TCP port 80 on host 207.46.19.190 could not be reached (Error code 0x274c)
warn The Internet host www.microsoft.com could not be reached
action Automated repair: Reset network connection
action Disabling the network adapter
action Enabling the network adapter
info Network adapter successfully enabled
info This computer has the following default gateway entry(ies): 192.168.1.254
info This computer has the following IP address(es): 192.168.1.72
info The default gateway is in the same subnet as this computer
info The default gateway entry is a valid unicast address
info The default gateway address was resolved via ARP in 1 try(ies)
info The default gateway was reached via ICMP Ping in 1 try(ies)
info TCP port 80 on host 207.46.19.190 could not be reached (Error code 0x274c)
info TCP port 80 on host 207.46.19.254 could not be reached (Error code 0x274c)
warn The Internet host www.microsoft.com could not be reached
action Manual repair: Reboot modem
info This computer has the following default gateway entry(ies): 192.168.1.254
info This computer has the following IP address(es): 192.168.1.72
info The default gateway is in the same subnet as this computer
info The default gateway entry is a valid unicast address
info The default gateway address was resolved via ARP in 1 try(ies)
info The default gateway was reached via ICMP Ping in 1 try(ies)
info TCP port 80 on host 207.46.19.190 could not be reached (Error code 0x274c)
info TCP port 80 on host 207.46.19.254 could not be reached (Error code 0x274c)
warn The Internet host www.microsoft.com could not be reached
info Waiting some time for the modem/router to stabilize
action Automated repair: Renew IP address
action Releasing the current IP address...
action Successfully released the current IP address
action Renewing the IP address...
action Successfully renewed the current IP address
info This computer has the following default gateway entry(ies): 192.168.1.254
info This computer has the following IP address(es): 192.168.1.72
info The default gateway is in the same subnet as this computer
info The default gateway entry is a valid unicast address
info The default gateway address was resolved via ARP in 1 try(ies)
info The default gateway was reached via ICMP Ping in 1 try(ies)
info TCP port 80 on host 207.46.19.254 could not be reached (Error code 0x274c)
info TCP port 80 on host 207.46.19.190 could not be reached (Error code 0x274c)
warn The Internet host www.microsoft.com could not be reached
info Redirecting user to support call



IP Layer Diagnostic
Corrupted IP routing table

info The default route is valid
info The loopback route is valid
info The local host route is valid
info The local subnet route is valid
Invalid ARP cache entries

action The ARP cache has been flushed



IP Configuration Diagnostic
Invalid IP address

info Valid IP address detected: 192.168.1.72



Wireless Diagnostic
Wireless - Service disabled

Wireless - User SSID

action User input required: Specify network name or SSID
Wireless - First time setup

info The Wireless Network name (SSID) to which the user would like to connect = 2WIRE481.
Wireless - Radio off

info Valid IP address detected: 192.168.1.72
Wireless - Out of range

Wireless - Hardware issue

Wireless - Novice user

Wireless - Ad-hoc network

Wireless - Less preferred

Wireless - 802.1x enabled

Wireless - Configuration mismatch

Wireless - Low SNR




WinSock Diagnostic
WinSock status

info All base service provider entries are present in the Winsock catalog.
info The Winsock Service provider chains are valid.
info Provider entry MSAFD Tcpip [TCP/IP] passed the loopback communication test.
info Provider entry MSAFD Tcpip [UDP/IP] passed the loopback communication test.
info Provider entry RSVP UDP Service Provider passed the loopback communication test.
info Provider entry RSVP TCP Service Provider passed the loopback communication test.
info Connectivity is valid for all Winsock service providers.



Network Adapter Diagnostic
Network location detection

info Using home Internet connection
Network adapter identification

info Network connection: Name=Local Area Connection, Device=Intel(R) PRO/100 VE Network Connection, MediaType=LAN, SubMediaType=LAN
info Network connection: Name=Wireless Network Connection 5, Device=NETGEAR WG111v2 54Mbps Wireless USB 2.0 Adapter, MediaType=LAN, SubMediaType=WIRELESS
info Both Ethernet and Wireless connections available, prompting user for selection
action User input required: Select network connection
info Wireless connection selected
Network adapter status

info Network connection status: Connected



HTTP, HTTPS, FTP Diagnostic
HTTP, HTTPS, FTP connectivity

info FTP (Passive): Successfully connected to ftp.microsoft.com.
warn HTTPS: Error 12057 connecting to www.passport.net:
warn HTTP: Error 12029 connecting to www.microsoft.com: A connection with the server could not be established
warn HTTPS: Error 12057 connecting to www.microsoft.com:
error Could not make an HTTP connection.
error Could not make an HTTPS connection.

[midimykeys]

*UPDATE* AT&T was out and installed an ethernet cable from my desktop to the router, and it STILL doesn't work. It was fine, online for about 3 minutes, and the connection failed, but only to the specific computer. I don't get it.