Apple has released software that lets users run Microsoft's operating system on its computers that use Intel chips. Called Boot Camp the program lets Mac owners run both Apple's OSX and Microsft's Windows XP.

Boot Camp, which will be included in Mac OS X 10.5 Leopard, will be previewed in August at Apple's Worldwide Developer Conference but is available for immediate download on Apple's Web site (trial version).

Apple said it had no plans to sell or support Windows but added that many Mac owners have said they want to run the operating system on their Intel-using machine.

"We think Boot Camp makes the Mac even more appealing to Windows users considering making the switch," said Philip Schiller, Apple's senior vice president of worldwide product marketing in a statement.

With Boot Camp, Intel-based Mac users can choose between running Mac OS or Windows XP each time they reboot their system.

When Boot Camp is run it takes users through a series of steps that shows them how to split their hard drive so the two operating systems can sit side-by-side.

It also shows how to make a boot disk to install the Windows XP operating system.

When a machine with the two operating systems is turned on, Boot Camp gives them the option to start either OSX or Windows XP.

Basic requirements for an Intel-based Mac that can run Windows XP are: OSX version 10.4.6 or later, latest firmware updates, 10GB of hard disk space, blank recordable CD or DVD and a single disc edition of Windows XP Home or Professional.