I don't care if it loses money. I'm bored and just want to play on a 1.5ghz netbook to see how bad it really is. Is there any CPU mining software around that will run on Win XP?
cgminer 2.11.4 or earlier. You should get 1 to 2 Mh/s out of it.
You might need to recompile it. Read the Windows build readme file.