How to add server access

To a work station. I have done this with NT work stations but it does not work the same way with server 2000 and server 2003. All work stations are ether 2000 pro or XP pro, I would like to do every thing from my desk top and not from the server room. There was a program on the NT cd that you could run on the work station as long as you had administrator rights. That would let you access the servers from your work station.