Had similar problem. Look at this thread. Might help.
http://reviews.cnet.com/5208-6618-0.html?forumID=6&threadID=4354&start=0
My Op. Sys. is Win 98...
im using Norton Anti-Virus...
i have no firewall or proxy...
i have got LAN access...
last thing i was using was spybot...
I lost my internet access suddenly...I cant connect to anywhere..i have re-installed WIN98, tested ethernet cards..they r ok...all settings are ok...but there are two lights are always on at the back of the puter...i think someone has locked something...or my service provider...
does anyone has got any idea about this...i dont want to format the hdd...ps: all other puters in the system run well...i have changed parts v.v. doesnt work doesnt work..im going crazy in here..HELP!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic