As an Apple-using web designer, I've tried a variety of options for getting IE7 on my computer. I have a pretty recent iMac (20" 2.2 GHZ w/ 2 GB ram), however, I just simply have not been satisfied with the results of my at-home trial issues of VMWare, Wine for Mac, etc. All I've wanted is to be able to preview my prospective websites in IE7! I've even tried "browsershots.org", which works fine, but takes WAY too long to load... So a few months ago I came across "Adobe BrowserLab", and after some pretty heavy testing, I highly recommend it: https://browserlab.adobe.com/index.html