The real moral of the story is, don't ever, ever help anyone with computer problems. I used to "help" people by building them setups cheaper than the OEM counterparts and thus, saving them money. When they came back to me with the problems they've caused and expected me to fix them, I couldn't take it anymore and stopped being that "computer guy."
A good 1/2 the people would sue, even though you just saved them another trip to the OR. .