My compter is now running on Vista Release Candidate 1 Build 5600 and the good news is that GP4 runs very smoothly on my machine. I'll keep on testing and let you guy's know how it goes.
yep i agree with you, tested it out last week and i must say also it runs very very smooth, i find it better then xp and the graphics looks in my opinion even better with the driver of the graphic card for vista.