If you open up windoes explorer, then click the folders button, from there click "My Network Places -> Entire Network -> VirtualBox Shared Folders". You should then be able to see your shared folders in the there.
To make it easier, once you find your folders, right click on the and click on map drive, this will let you map a network drive (such as Z, to the folder, so that it's easier to get to next time.
Bookmarks