"Read [Mac] volumes when booted in Windows"

http://www.macosxhints.com/article.php?story=20070717090846961

"... HFSExplorer, a free and open-source utility that provides read-only access to HFS+ volumes and DMG files from Windows. If you use Boot Camp to run Windows, this is a great way to get to your Mac's files, at least on a read-only basis."

For you non-Mac people, "HFS+" is the filesystem used by virtually all Mac volumes; "DMG files" are .dmg disk image archive files, commonly used.