Yup, what Schad says. I've been developing in VS2k5 under Vista ever since RC2 was released way back in September. Because our big project was just deployed live within the past week, I didn't get a chance to redo my dev environment to Vista release until just a little over a week ago (which luckily coincided with the end of Feb when RC2 would stop working).
I'm now running a full retail version with the beta update that Schad mentioned and it runs great (actually better than it did in RC2 as there were some funky debug issues going on if you stayed at a breakpoint for too long).
Oh, and one more thing that is kinda confusing about what Schad quoted. First you have to install SP1 (which takes forever!). Secondly, you have to download that beta update. The text makes it sound like it's a beta version of SP1 when it really is just a relatively small beta update.
Good luck!
-Jax