I'll post up my guide soon, been very busy lately.i installed MP onto Vista 32-bit a while back and had MAJOR problems installing things due to the UAC and not-being-logged-in-under-ADMIN-ACCOUNT ....it got to the point where it i couldnt install or uninstall things..i totally wiped the system after figuring out what i did wrong in the first place..heres what u do :
1. Install Vista (im using ultimate)
2. GO DIRECTLY TO SAFE MODE. Do not pass go, do not collect $200, go directly to SAFE MODE.
3. TURN ON ADMIN ACCOUNT
4. TURN OFF UAC
5. DELETE YOUR (just created by install) USER ACCOUNT
6. GO BACK TO NORMAL BOOTUP
once back in vista u have full access and ZERO issues as far as the crappy popups about allow/deny
u can install/uninstall normally
from that point on u install just as u would normally on XP..getting vista drivers of course
Using vLite, you can remove UAC along with lots of other useless Vista components even before you install Vista. My guide will explain what to remove on the Vista image before using it to install.