Preventing user access to Windows functions (on XP professional)

[Brian Grady]

I want to setup a Windows XP computer so that a particular
user is only allowed access to an application I have
written (VB screens that access a remote SQL server
database). I don't want the user to be able to do
anything on the computer except to login to run my
application, use my application, and when my application
exits the user is logged off.

Is this possible, and if so, what are the steps that need
to be taken?

Thanks