revisitting the hell that is css 3column design. can someone offer me some advice

wow, it's been a while since i really got my hands into any design work, and i can tell you this, my css has gotten SLOPPY. I remembered 3column designs being a royal pain in the ass, but i can't get shit straight here tonight. if anyone fluent in css could take a look at my sheet for me and give me some tips as to what i'm doing wrong, PLEASE HIT ME UP, i would really appreciate it, and in return maybe i can do something that'll help you out. i got my 3 columns running over top of eachother in firefox, and my entire wrapper div not aligned center in ie. if someone can please do me this favor and look it over i'd be endebted to you, otherwise i'm just gonna have to crash for the night and start fresh with the googling tomorrow morn. i'd like to get this layout slapped together tonight though.

icq is 432-645-736 msn [email protected]