There's been plenty of hype about Apple's dual boot option for Windows Macs, Boot Camp but there's another option that is worthy of consideration.
In my post about Boot Camp yesterday I mentioned that although it's a great option for people that need a full Windows workstation, I prefer something like Wine that allows you to run Windows applications while still living in Mac OS X.
There's another solution that does this now called Parallels. Parallels Workstation 2.1 is the first desktop virtualization solution for Intel-based Macs that enables you to run Windows, Linux and other operating systems in parallel inside Mac OS X.
Its important to note that this is not a "dual-boot" environment like Boot Camp. Parallels allows you to use Windows or any other operating system at the same time as Mac OS X, so that you can stay in your Mac OS X desktop while still being able to use applications from other OSes. Parallels allows you to build virtual machines running nearly any x86-compatible OS, including Windows 3.1-XP/2003, Linux, FreeBSD, Solaris, OS/2, eComStation, and MS-DOS.
Think of it as a "single boot" solution for running other OSes simultaneously on your Mac.
The Mac version is still in beta testing, so you should expect some problems. The mouse is a little wacky, there's an issue with it forcing a restart when OS X wakes from sleep if you leave an instance of Windows running and full screen support is not included in the Beta.
Download a free, fully-functional 30-day trial of Parallels Workstation 2.1 for Mac OS X and submit comments, suggestions and feedback on the Parallels Web site.