I'd have to agree with Darren. Autodesk supports the installation on virtual machines, especially XP VM for Windows 7 to maintain compatibility with pre Autodesk 2010 released products. I'd have to say so long as you do not exceed your license use, it'd have to be okay. The EULA is pretty clear about accessing it remotely though, so remote desktop may not be a supported licensed method in this case. However, from what I learned at AU2010, that may be changing in the future.