This page explains how to do it:
http://www.mvps.org/ecvogel/kb/XP_remove_progs.htm
"Warren C. E. Austin" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Some weeks ago (and like a ninny I didn't elect to store messages
> off-line) one of the users here *posted* a solution whereby an end-user
> could restore a number of intentionally HIDDEN Windows "System" Components
> to the Add/Remove Control Panel through the judicious editing of one of
> the *.inf's located in the INF subfolder of the the WINNT (or whatever it
> maybe called) folder.
>
> I need the name of that specific *.inf and, if whoever *posted* this
> information in the first place would be so kind, instructions on how to
> proceed.
>
> Warren C. E. Austin
> Toronto, Canada