I just got a call from a client who's daughter is mentally and psychically impaired.
I have been to the house numerous times to clean up virus's and spyware infections, reformatted and reinstalled windows once.
I have set her up as a limited user, installed spyware guard and spyware blaster, installed zone alarm, made sure new self updating AV software was installed and working.
Even with all this she is able to click on something or gets some message or file sent through AIM that reinfects her PC. AIM is not the sole source of the reinfections though as she pretty much clicks on whatever pops up.
Her mother was sick of having to deal with the limited user issues and just gave her the password to the administrators account. With the help of her AIM buddies she was dangerous enough to set herself backup as an Admin.
So to make a long story short im looking for ideas as to how to foolproof her PC and still allow her to chat with her AIM buddies.
Im considering trying Knoppix along with GAIM as a replacement for AIM. Her main uses are for communicating with her friends and other people with MS.
I have used a knoppix CD for virus scanning and while it is somewhat slow for some applications and limited in other ways im thinking it may be a viable alternative.

Any other thoughts on this would be appreciated.