Check out http://www.vmware.com/switchtofusion

I'm a happy new Mac convert, and for a while I thought I could get by without Windows, but I miss programs like Adobe Audition, and it's nice to have access to Windows sometimes. Boot Camp is a cool idea, but it almost messed up my drive, and who wants to reboot just to run Internet Explorer? I'm glad I switched to VMware Fusion. It was the easiest Windows install I've ever done, and the performance is great. I also love the near-seamless integration of my Windows apps into the Mac OS. Really cool piece of software! (2008).