Wireless network not working

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Recently purchased and installed Linksys WRT54G. Finally managed to
get the computer (Thinkpad T42/XP-SP2 with internal Intel PCI Wireless
Adaptor) to connect to the router but now when trying to load web
pages browser won't connect (Firefox or IE6). Both browsers try dial-
up which suggests the wireless connection not recognized but it shows
connected on the Available Networks page.

Any ideas? Hardware problem, Settings problem?

HELP!

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