I finally got around to trying a OS complete restore after installing WHS PP1. This time I restored Vista x64 to a partition w/ a newer MS OS on it.
It was a bit of a task as I had to get a new RestoreCD & the WHS restoreCD download happened to be a .MSI file instead of a .ISO (also the readme.txt file was-not-included w/ the Dl).
I did find the info on converting the .msi to a .iso so it would boot off a CD.
Excerpt from the release documentation:
1. Download the package from Microsoft Connect.
2. On a home computer, run the included Windows Installer package (RestoreCD.MSI) to install it on your home computer
3. The installation program will put the ISO for the Home Computer Restore CD (Dual Boot) on your computer at the default location of [Your user's Document directory]\Windows Home Server Home Computer Restore CD (Dual Boot) (e.g. C:\Users\[username]\Documents\Windows Home Server Home Computer Restore CD (Dual Boot))
4. You will need to use software to burn the ISO file onto a blank CD before you can use it.
After hitting 'Next' the installer said 21 minutes to completion, it actually took 26 minutes, thats ok though as Vista x64 installed the same as previously, activated & w/ my software I like, all working.