Parallels Desktop gives Mac users the ability to run Windows, Linux or any other operating system and their critical applications at the same time as Mac OS X on any Intel-powered iMac, Mac Mini, MacBook or MacBook Pro. According to performance research conducted by Crimson Consulting Group, Parallels Desktop 5 for Mac performs 22% faster than the nearest Windows-on-Mac competitor in standard productivity testing of Windows 7 64-bit on a MacBook Pro. In addition, version 5 is up to 300% faster for virtual machine operations than the previous version. For 3D and graphics performance, tested under the industry standard 3Dmark 2006 Professional test suite the new version performs up to 7 times better.

WHAT'S NEW
Version 5.0.9376:
# This version of Parallels Desktop fixes compatibility with new Mac Pros based on Intel Xeon Westmere processors.

After you have installed Parallels Desktop 5, you should activate it with an upgrade activation key. To launch the activation process, choose Activate Product from the Help menu and enter your upgrade activation key and the required information in the activation dialog. If you purchased your upgrade activation key for Parallels Desktop 5, you may need to confirm that you have a valid permanent key for the previous version:
# If you activated the previous version of Parallels Desktop with a permanent key, you will need to enter the upgrade key only.
# If you activated Parallels Desktop with a trial activation key, you will be prompted to enter two keys: the upgrade activation key for Parallels Desktop 5 and a permanent or upgrade key for the previous version.
# If you purchased the previous version of Parallels Desktop but haven't installed it on your Mac, you will need two keys to activate Parallels Desktop 5: the upgrade activation key for Parallels Desktop 5 and a permanent or upgrade key for the previous version.

Always make sure to use Little Snitch!

System Requirements
OS version: Mac OS X 10.4.11 or later

Link for more information: http://www.parallels.com/products/desktop/?ClickID=bssveyz1nkdgnddqlzee1qvsvzdnmqe6zvqq

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