Dark_art_: From your question I would assume you're running some Linux distro.
Install virtualBox or similar, like Qemu (Debian has it's own VM manager) and install Windows on a VM. Very easy really, just like that.
The hard side is getting 3D acceleration, it's possible with dual or single GPU setups. A single GPU is harder and is more of a hack.
That said, is probably better to open your own thread about the subject, not only to not "polute" this thread but also to get more help.
Is there a website you'd recommend for this sort of subject?
richlind33: I requested a refund once and it went through within a few hours, no questions asked. At this point in time that's pretty damn good. With inflation the way it is, wallet funds are worthless, unless you're looking to do GOG a favor.
Syphon72: Wish I had experience like this when I asked for money back and not steam wallet.
Pretty much everything seems to be going to hell right now, not just GOG. For right now, Steam is better for me.