I'm not sure what you mean by "limited user account."
Do you mean as one who logs onto a computer as other than the
"adminitrator" of that particular machine?
-Splain...
The "limited user" is the other choice you typically have when
you create users in XP (does not have admin rights). For
what it's worth, I have included a copy of my exchange with
Photodex support below that should give some more detail
in what I am talking about ...
You are not the administrator of your computer?
?