Thanks. I'd guess that !0 is probably the best way to go, for something that would work in both Linux and Windows.
Now if only Wine worked perfectly, or game developers made Linux versions (in the spirit of the '90s, when games were routinely issued for several different OSs), so that I didn't need Windows for MMOs. Since the successor projects are of a mentality similar to Linux's - "Screw you; we'll make our own" - it'd be wonderful if they also made Linux versions, so that my computer could be completely free of Redmond. (I'm not holding my breath, of course.)