I recently updated to 10.6.6 from 10.6.5 everything updated smoothly has it has before but now I cant boot into osx other then in safe mode otherwise I get stuck @ the grey boot up screen and when Im in safe mode I dont have wifi so I cant install anything via internet and I can only use osx formatted drives

I have an HP DV5 with 2.4 core 2 duo, 4gb ram and 250gb HD

Thoughts? Ive tried everything I know and nothing works

Any help would be AWESOME