Hi again
Were you able to check in the configuration for the router & firewalls?
I suppose I should have asked earlier: what browser are you using? IE? FireFox? Opera? AOL? Or?
Was your 'new' computer blank when you got it, and you installed Windows 98 fresh, or did you inherit a machine with Windows already installed? Or?
And - is there no security software currently installed on the system, no firewall, no antivirus, no antispyware? [Not a terribly wonderful situation, since that presents a rather inviting target for exploits]. For the future, I recommend that a system always have such protections in place before connecting to networks - especially to the Internet.
If you're fairly certain that your routers & firewalls are configured correctly - a quick-fix might be:
1) Make sure antivirus, antispyware, & firewall protection is in place. Run a few scans. Clean up if necessary.
2) Set the Security & Privacy settings in your browser to their defaults.
3) Reboot.
4) Run a Registry Cleaner (I like CCleaner for this sort of thing ---
http://www.download.com/CCleaner/3000-2144_4-10315544.html )
5) Perform a repair install of IE (or uninstall and then reinstall your browser).
6) Test.
Best of luck
. . . Gary