Please grab the latest version from the Daemon-Tools Downloads section...

Change Log:
1.06:
1. Fixed, major bug which caused *All your CD/DVD-ROM devices to reassign drive letters on reboot, many thanks to "Alex Choporov" for pointing this out.

2. Added support for Windows Vista x64 (Y.A.S.U now prompts for the correct user permissions, when run).

3. Added two new command line options, -nosd & -nosr (check "Commandline Parameters" for more info).

4. Modified Y.A.S.U Hide & Restore feature(s), should be a bit safer now.

5.
Added icon for Y.A.S.U as requested.