GMail Drive creates a virtual filesystem on top of your Google GMail account and enables you to save and retrieve files stored on your GMail account directly from inside Windows Explorer. GMail Drive literally adds a new drive to your computer under the My Computer folder, where you can create new folders, copy and drag'n'drop files to.
Reviewing 1.0.15 (Dec 19, 2009)
Can confirm that this does not seem to work on Vista 64 bit
Doesn't seem to work on 64 bit Vista -- any ideas?