Whilst surfing this morning I found this website: http://browsershots.org
"Browsershots makes screenshots of your web design in different browsers. It is a free open-source online service created by Johann C. Rocholl. When you submit your web address, it will be added to the job queue. A number of distributed computers will open your website in their browser. Then they will make screenshots and upload them to the central server here."
Once you've submitted the site, you can view the results as they come in, and download all the screenshots in a single file. Very neat.
