Vista - vista 64 bit wireless problem

Newly installed Vista home premium sp1 64 bit
Realtek RTL 8185 wireless network card
belkin g plus mimo model f5d9230-4 wireless router

router and networks card are vista 64 compatible and correct drivers installed
My card sees my network but cant connect and cant obtain a ip num i disabled wpa security on router i get limited connection no ip number tried almost everything in the book including disabling ip v6, registry edit, change settings nothing seems to work
any suggestions would be appreciated
Thanks in advance

I had issue where Vista 64bit could see the SSId with strong connection, but could not connect...got error message that access point not responding, but I was connected on 2 other machines running XP. I read through several forums and decided to log into my NetGear WG632 router and use 'g only' instead of both b and g, then set authentication to Automatic from Shared...also updated firmware on router.... voila! Vista connected.