We are going to upgrade seven of our Win2000 servers to 2003, and I was working with CDW for an upgrade cost. They want to know the number of CAL's needed, and there is some question in my mind about this. By their definition, a CAL equals a person pulling information from a server. If this is the case, I would need 50 CAL's. If a CAL really equals number of concurrent users, that would probably be around 5 to 10 at any given time. Can someone clarify?