Apple released Boot Camp 3.1 late on Tuesday with support for Microsoft's Windows 7 operating system. Boot Camp is Apple's utility that lets users run Windows natively on Intel-based Macs.

The update supports Windows 7 Home Premium, Professional and Ultimate editions, improves trackpad support, and adds support for Apple's most recent peripheral updates such as the Magic Mouse and wireless Apple keyboard.

According to Apple, some Intel-based Mac models don't support running Windows 7 via Boot Camp, including:

• iMac (17-inch, Early 2006)
• iMac (17-inch, Late 2006)
• iMac (20-inch, Early 2006)
• iMac (20-inch, Late 2006)
• MacBook Pro (15-inch, Early 2006)
• MacBook Pro (17-inch, Late 2006)
• MacBook Pro (15-inch, Late 2006)
• MacBook Pro (17-inch, Early 2006)
• Mac Pro (Mid 2006, Intel Xeon Dual-core 2.66GHz or 3GHz)

The 32-bit and 64-bit Boot Camp 3.1 updates are available at Apple's Support Web site.

Apple also released Boot Camp Utility for Windows 7 Upgrade. The utility is necessary for Boot Camp users that are currently running Windows Vista and want to upgrade to Windows 7.