BrowserCam

BrowserCam:

“Browser Cam creates screen captures of your web pages loaded in any browser, and on any operating system, so you’ll be 100% sure your web pages look good-and work right-on any platform.”

A handy tool — $39.95 / month though. Also they don’t seem to have all browser/operating system combinations available. XP is not there at all. Still worth the trial. I’ve used a few times with some helpful results.