IE Tricolumn problem

I’m using the Tricolumn1.2 theme.

I use Moxilla Firefox as a browser – when i try to load it with Internet Explorer its all messed up. My right sidebar aligns belowe all my text, while my left sidebar is where it should be. I get this error on IE:

Line:82
Char:1
Error:Object Required
Code:0
URL:http://www.thegolfdrillguru.com

I’m assuming that means I need to add something on line 82 and in the first character. But in what template, my main one? my stylesheet?

Some help would be appriciated.

Thanks