Showed them my Laptop with Ubuntu. Easy sale. Free software for life.

I also set up gnomemeeting and skype so they could talk to freinds in the Phillipines.

I set the computer up. Showed them how to run apt-get update and apt-get upgrade. And chkrootkit and rkhunter once a week.

Strangely enough I never have calls from them about viruses or malware. Unlike my Windows using freinds.

They didn't care what system was on the computer as long as it worked.