I have some more questions about server 2000/2003 CAL's. Will not have enough user CAL's cause a connection problem to the server with file sharing and/or any database programs? Or are CAL's just for legalities? Also, If I buy server 2003 user CAL's for my server 2000, do I need to contact Microsoft or do anything special? Or do I just put the numbers into the 2000 server and it will work.