2 routers wireless HELP!

i have read different forums and options and none work.
i have a linksys wireless router connect to cable dsl modem. so wifi works great. i had a belkin router downstairs working with the linksys for my xbox i had to reset it for some stupid reason and now i cant get the belkin to get internet connection.

1. the linksys is the main router
2. belkin is i guess the repeater
3. i have set the belkin as static and gave it gaeway ip of the linksys
im lost what am i doing wrong it worked before and now im pounding my head here