I got a new desktop loaded with Microsoft Vista.
When I couldn't connect to my router (at home) I tried ipconfig /renew /reliease commands and got the following message:
"Unable to contact your DHCP server".
I brought my PC to work and it connected fine to the network there.
At home I use the modem/router provided by Verizon (FIOS). I tried several ethernet cables - so I am pretty sure it is not the cable.
BTW, other pc's at home are connected to the router, so the router is OK.
Any help is appreciated.