Ok so first of all get a windows xp s2 iso/ windows 7 (google it)
Second of all download Sandboxie
Install crossfire to your iso/ copy and paste it from your computer to the virtual machine.
Once you have installed Sandboxie right click/left click on crossfire and click run sandboxie and then allow it to load up.
I do not take any credit for this, i only have credit for finding it.