and for the upgrade :/
ca 200-300$ (yen?)
249-349$ (+ -) for a 'new' PC
you already have 2-3 PC, doesnt you?
I haven't looked, but I'd probably only be trying to push it to 1GHz so I can run Leo on it.
And the Power Mac G4 is my third computer, I have a 1.4Ghz G4 Mac Mini and a 3.2Ghz Intel dual core Shuttle PC running OSx86.
Fourth if you count the fact that my iPhone really operates like a small laptop, and I use it as such.