For all your PC requirements

Parallels Desktop 4.0 for Mac
Millions of users worldwide coupled with the award-winning, Parallels Desktop for Mac is easier than ever to use with its brand new Mac user interface and lightning-fast performance. New version is packed with dozens of new features that make running Windows programs on a Mac completely seamless.
Features:
Run Windows on Mac easily. Right alongside Mac OS X
Parallels Desktop for Mac enables users to run Windows XP or Vista, Linux, and more side-by-side with Mac OS X without rebooting. With Parallels' award-winning virtualization technology, run Mac OS X and Windows applications at the same time. Drag-and-drop files between desktops. Launch Windows apps like Mac apps - right from Mac's dock. Parallels Desktop for Mac 4.0 is the biggest upgrade ever with over 50 new features.
Dramatically-fast performance
Parallels Desktop takes advantage of Intel Core Duo and Core 2 Duo processors and Intel VT-x hardware accelerated virtualization, for near-native speed and rock-solid performance. With support for up to 8 GB RAM, 2TB virtual hard disks and up to 4 CPUs, Parallels Desktop for Mac delivers maximum performance.
Unmatched compatibility
Enjoy the benefits of having a Mac and keep running the Windows programs. Parallels Desktop for Mac runs thousands of Windows apps and is compatible with USB devices including mobile phones, printers, scanners and GPS devices. With Parallels Desktop run any version of Windows, including Vista and XP, as well as Linux, FreeBSD, even MS-DOS, at the same time as OS X! Parallels also supports running Mac OS X Leopard Server in a virtual machine.
Comprehensive protection and privacy
Parallels Internet Security by Kaspersky protects Windows programs from virus and spyware threats and even includes a firewall and anti-spam tools. Parallels Desktop also includes SmartGuard instant "snapshots" which make backup and recovery easier.
Software Requirements:
Support for any 32- or 64-bit Intel-based Mac:
Support for any 32- or 64-bit Intel Core Duo processor featured in new Intel® Macs::