I've just bought Rovio 3 days ago and I had a lot of problems to Setup on a 64bits PC with Windows Vista (on a HP touch smart PC)
After reading a lot of info on internet, the conclusion is that there is no way to setup the Rovio with such a machine.
The big problem is that the software (even with the latest on the web of Rovio) it doesn't recognise the Rovio 1.0 USB, so just in case you have a 64 bits machine with Vista, don't try to cofigure it with the Software because there is no way (I've spent like 4 hours!!!9.
Finally, I took my imac 24" and installed the Windows XP on it, and it worked perfectly and at the moment.
I hope if someone read this post it will be helped ;-)
Pd: sorry if I have some english gramaticals errors...I'm from Spain!