Remote desktop – disable locked screen?

Many of my remote employees use the xp pro remote desktop app. As an IT admin, occationally they need my help to assist them online while they are logged in. The remote desktop by default locks the remote screen so I can not see what they are doing or have the ability to input. If I do log in as THEM, I force a log out of their session. Is there a way to turn the locked screen off from an ADMIN option and share the session?