Well, you only need a
virtual machine for emulating Windows XP. The best way is a program called
VirtualBox, here you have a link to download it:
-
http://www.virtualbox.org/wiki/Downloads
Use the first link in that page for computers with x86 architecture and Windows 32 bits/64 bits. (VirtualBox 3.2.6 for Windows hosts x86/amd64). If you dont know how to use it ask in this thread and I will answer you.
Also you need a
Windows XP CD or
Image to install it in the virtual machine.