Get Terminal Services to Work

I am trying to get Terminal Services to work on my XP Pro machine. A guy told me to go to COMPUTE RMANAGEMENT>LOCAL USERS and add to my login the REMOTE DESKTOP USERS group. However, not only does the group not exist, but you know when you go to the properties of your login name on this screen and already have 1 or 2 names or groups under MEMBER OF? Well, I got nothing but a head picture. No names. I go to ADD>ADVANCE>FIND NOW and nothing comes up.
What am I missing to get this to work?
Please assist.
Thank you and God bless.