Additionally, there are successful tales of propeller heads setting up inexpensive Linux Internet terminals for their non-propeller head family members. Linux can be customized to completely lock out unwanted changes, and it can be remotely administrated. A homebrew Linux-based Internet terminal could be a good gift to get mom onto the Internet, etc.
Otherwise, its probably best left in the domain of the technical enthusiast.
I see you've answered my question in your usual helpful and technical fashion.