Vista Sleep Issues Solved

I finally found outhow to troubleshoot Vista sleep issues.  Specifically, how to tell what woke the computer.

By using "powercfg lastwake" on the command prompt, I could at least tell that it was a USB device.

A little peeking into Device Manager  and I noticed both my mouse and keyboard were allowed to wake the PC.  (Normally this is probably a good thing.)  I simply disabled that feature and my problem is fixed.

Big thanks to the people over on vistax64 where I found my solution