By way of keeping up with my computational needs, and the Windows and Mac OS...
I just ordered a Mac Mini (late 2009 Penryn, actually a shiny new one) to replace the loud, cased modded, and accelerated G4 Quick Silver. It's fanless, consequently quiter, and much faster than the old workhorse. I'll prolly try to sell the Quick Silver so it keeps on working. It'll be nice to not have that white noise generator in the house, tho' it's been enormously handy over the years.
And for my new microcurrent electrotherapy work I wanted a laptop, since it's
programmed from a computer - and a Windows box no less. So I've not actually had much relationship with Windows since, well, since DOS. Learning curves a plenty ahead for the new year. So I ordered a refurbed MacBook from Techrestore.com. I'll run the Parallels Desktop emulator and Windows XP.