I've not used Windows for years. I run SAM Simulator under Linux using a compatibility layer. Since Linux is free I install as many as I want without a second thought. When I suggested trying a virtual machine, I didn't really think of it from a Microsoft Windows point of view.
I think I've heard Windows has mechanisms to prevent it being installed to multiple machines at once, and some people don't even have a windows install disk. So, my Virtual Machine idea probably isn't very practical.
In case you don't know what a Virtual Machine is, basically it's a programme that pretends to be a computer, so you can install an operating system and software on it. It lets you run multiple operating systems at once, without effecting your real computer.
If your CPU and motherboard has features which support Virtualisation, then performance will be pretty good, but if not then the Virtual computer will be a bit slower than your real one.
This is all getting a little complicated now. If you still want to give it a try, then VirtualBox is the easiest software I know. But it's still probably a little complicated for the novice computer user.
There probably is a much simpler way to resize a MS Windows display without going through all this trouble, but I'm sorry, I just don't know it.