Sorry, I didn't try with IE7 :-/ I could just put my hands on an old IE6 version to test the render. I'll definitely install a virtual machine or smthg :-) Thanks for the report.
Check out browsershots - http://browsershots.org/ . I think you can submit a job to check how a page renders on a specific OS-browser combination. Otherwise you can download and check it out - it's open source.
Yes, it's a pain b/c you have to run a VM, but it's the most reliable way of testing IE. Other "shortcuts" won't perfectly emulate IE7 in an IE6 environ, or vice versa.