Floats in IE

Can someone do me a massive favour and please please tell me how to make the boxes on the right here (http://www.hostmosis.net/templates/winter/) show on the right alongside the contact us boxes in IE? For some reason they're sticking down the bottom :/

(Forgive the rest of the broken CSS, the guy that I'm trying to help with this just randomly changed the stylesheet on his server).

Preferably if I can do it by editing rystylesheet.css, that would be great.

Most probably due to markup errors, see http://validator.w3.org/check?uri=http%3A%2F%2Fwww.hostmosis.net%2Ftemplates%2Fwinter%2F&charset=%28detect+automatically%29&doctype=Inline&group=0

Anyway rectify them and help us to help you.