Lazybit

It is not known to the wide public, but the truth is that for quite some time a version of Private Disk Light for Windows Vista, as well as for 64-bit versions of Windows XP has been available.

It can be downloaded: http://files.dekart.com/beta/PrvDiskLight-Vista.exe

It is unofficially called Private Disk Light 1.23, and here are the changes:

• Support for Windows Vista (32-bit and 64-bit)
• Support for Windows XP 64-bit
• Prettier icon
• Surprise - a new feature that hasn't been present in the earlier versions of Private Disk; it is not likely to get noticed. But if you do notice it, you can get a free license for the full version of Private Disk, and I am absolutely serious about this one ;-) Good luck!