Apple has just released an update for Boot Camp, the software that allows Intel-chipped Macs to run Windows. Boot Camp is integrated into Leopard, the latest Mac OS, and is available as a free download, while version 2.1 offers greater compatibility with Windows XP and Vista. According to Apple, it’s a highly recommended update, especially if you are one of the happy Boot Campers planning to download Windows XP Service Pack 3 that’s likely to be made available for download next week.