Help with fusion and bootcamp

[xdbuix]

I installed windows vista home premium on my macbook using bootcamp. I had the trial version of fusion and it worked flawlessly. I recently bought the real version of fusion and it came with a free upgrade to the new version of fusion, fusion 2.0. Now windows won't start with fusion 2.0. When I start up windows using fusion, i can see the first part where windows starts up. However, when I come to the password screen, I hear the little bleep windows makes, and it comes to a black screen with two scroll bars, one on the bottom, and one directly in the middle of the screen.

Any tricks to help? I've been going crazy with this.