[Solved] IE7 screwed up my CSS layout.

Hi, I am new to CSS, I customized my blog with Firefox/firebug and it works great under Firefox and Safari, but it's major screweup under IE7.
Can anyone please look at it and tell me what am I doing wrong? I am kinda new in to this.

site: http://preview.tinyurl.com/yrt3yt

Thanks for any help.

pavs

ps, I am new in this forum. I hope this is the right sub-forum to post this question.