How to test in IE with Linux

Normally I have two computers to work on - my development machine, running Ubuntu, and a testing machine that has Windows. The testing machine is in surgery, and I need to be able to test in IE8. Unfortunately I can't seem to get it to run under wine. I've tried the IE NetRenderer add-on for Firefox, but all it does is take a screenshot of the page. I have dynamic code (ajax) that I need to be able to test.

Any ideas?