You might be missing something simple, but it's hard to say. We don't
know how you set up the router, how you set up the computer, whether
they're correctly connected to each other, etc.
Open the Network Connections folder. Does it show a Local Area
Connection? If not, the network adapter isn't installed properly.
Does the connection's status say "Connected"? If not, it isn't seeing
the connection to the router.
If those things are OK, right-click the Local Area Connection, click
Status > Support > Details, and look at these settings: IP Address,
Subnet Mask, DHCP Server, DNS Server. Compare them to the settings on
the computer that works. They should be the same except for the IP
address, which should be different only in the fourth number.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)
Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.
Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com