Choice is good. Not having to choose is even better.
Mac OS or Windows? Parallels Desktop 5 for Mac lets you seamlessly
run Windows and Mac OS X side-by-side, drag-and-drop your files
between operating systems, and run Windows software on your Apple
computer without rebooting.

Faster

* Run Windows 7 with Aero
* Enjoy Snow Leopard
* Use 1000s of Windows applications Smarter
* Share files between Mac and Windows
* Use Windows apps like Mac apps
* Connect your favorite USB devices
* More Powerful
* DirectX 9.0c/9Ex with Shader Model 3
* All the security you need for Windows
* No compromise on performance or speed

http://www.parallels.com/

Download File Size:227.29 MB