AOA's Samunknow has written an article detailing how to set up WindowsXP
to allow a user account on your computer to run games requiring admin
privileges without giving that user admin privileges. While this
article applies specifically to games, the principles involved could
easily be applied to other applications as well. Here is a quote from
"Many kids have their own computers. As parents, this poses a problem
with computer safety; not only to keep your kids safe but to make sure
they do not do something that will cause damage to OS. A great way to
keep a leash on the activity is to setup the accounts as limited.
Unfortunately this will keep some already installed apps from working,
including some games. There is a solution to this problem. This quick
and easy tweak will enable you to keep the account set as limited and
still allow running of applications that require an Administrator account."