I've got a copy of WinXP off of MSDNAA, with a key. I've mounted it to my CD-drive, and now I'm trying to make it in to a VM.
The problem is, it seems that the thing is constantly trying to connect to a DHCP server, fails to connect and then decides no operating system was found.
The file I got off MSDNAA was an .img file, so I had to mount it to a virtual CD drive.
VmWare workstation comes with a Windows XP iso, tried that, also failed.