Mac's will do fine (Score 1)

Out of experience I can tell you that ginving these people a mac will do very well. In addition you can easily arrange the settings so they only have internet and e-mail. Both my own parents (80) and my father in law (85) have thus been happily surfing away with minimal maintenance from my side and no viruses and no computer down time from their side. They both use second generation iMac's which now are more than 5 years old and everything is still working fine!