In this case, me wife's Grandmother has several behaviors that increase the likelihood that she will be infected.
- She installs random software that she downloads from the Internet.
- She often runs her programs using "Run as Administrator"
I am tempted to remove Windows from these computers, and install Ubuntu, but I think that this would be a steep learning curve for her, and I would still need to set up a way for her to run windows programs (Wine or VMWare)
If I had more time to dedicate to support, I could change her account to a non-Administrator account level. But then, everytime she wanted to install some softeare, or run a Windows Update that prompts for administrator access, I would have to do that. Unfortunately, we are local to her, and I don't have the time to manage all of these things remotely.