Does anyone have a clue why on this page the background is all.. messed up in IE?

http://hinotoxin.impureminds.ca/blog.php?newskin=3

I'm on a Mac and it looks fine, but my Windows using friends say theres a big purple bit on the background, at the right side of the page. The main layout picture is a gif and that part IS transparent... so the repeating background (w=1064) is just being weird!

Thanks to anyone who could look at the code or try to figure out what's going on with it.

it looks like for some reason, it is streching the image...try changeing the size of the images to px?

Well I think it's actually not the background, it's something to do with the image under "Choose Skin". I've checked the code, and even redid it but it's still showing :\
So frustrating.