As you have stated yes it did work on Vista (just finished the compile and playback) here are a few tips to help others that may have encountered the same difficulties as my self.
My project was with *.m2v mpeg files and sound was wav 44 khts. I used premiere to export the Mpeg and sound files separately.
My first hurdle was DVDIT Pro HD wrote the image BUT couldnt identify my BR RW blank, I got message saying no valid recordable media found.
I made sure i was up to date with firmware on the Super Multi Blue Drive, installed the upto date Sonic Record Engine (PXEngine) from Roxio site (linked in a post). But after a restart, still no Recordable media found even though definately had a blank 25GB format BR RW i the drive which was also working.
I decided to uninstal DVDIT Pro HD, then reinstall. This was the trick, obviously I had installed DVDIT first then later added the Blu-ray drive so after the reinstall it picked the drive up no probs.
My next hurdle was I created A BR RW image as the medium VBR settings and went to burn disk and select the *,gi image file (smallest one). I got a message saying this image is incompatible with this media, I scratched my head and tried creating a normal BR R image to write to my BR RW but again to no avail. I retried another BR RW image but still invalid image for this media.
I went to the forums and followed advice from a couple of posts, firtly I altered the DVDITPRO HD icon to run in XP service pack 2 compatibilty mode AND when I ran the program ticked the box at the bottom "Open DVD", I immediately noticed my file size on the BR image was reported as having much more space now? I went to burn image, selected BR RW (same as image) selected the small *.gi image file and hey prezto burned fine, I have watched the disk and no error plays fine!
Hope this info helps some of those who have run into probs. As alwas there seems to be a work around or a fix.
Many thanks Scott for your support again!