Also news today that VMWare released a new, free VMWare player, which is basically a cut-down version of VMWare workstation. The fundamental limitations are that you can't create virtual machines or modify the virtual hardware of VM's, but you can run VM's built on a full version of VMWare.
This is pretty cool - I can now take VM's built on VMWare Workstation in the lab and run them on my laptop in the field without having to buy an additional VMWare license.
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Update:
Check out this recent digg - A perfectly free way to create and use an XP Virtual Machine - all free, all Legal.
This guy uses the Open Source QEmu emulator and the free VMWare player to run an XP VM. Note that it's not really free as you need a Windows license, but the VM technology is zero-cost.
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