Okay, so I bought VMWare Fusion. I installed it, and ran it. I have a MacBook Pro with 2 GBs of RAM. I bought it expecting not excellent performance, but pretty good performance. I used my Windows Vista Home Premium boot camp partition. I took off all the Aero and graphical UI stuff. I allocated 1 GB of RAM to it, and both processor cores are on. It runs like absolute ****. The mouse isn't even smooth. Even with no other programs open besides VMWare, it runs horrible. Not only that, but now it says due to a hardware change, I need to reregister my copy of Vista! How the hell do I do that?