installe (officepakket) on pc(win2000)

I have many pc’c (win2000).Evry disktop is multi users,and I have one server.I would like to installe office on these disktops where win 2000 seted up to make it easy for alle users to use it.What is the best way to do that?.What I did is the folowing:-I make alle the users of that disktop local administrators for that disktop.than one of the users had installe office pakket (localley).The problem that the users can open office pakket localley but if they logon on the domain I merked that the office pakket refused to open (indead only outlook and front page accept to open the rest not.how can i solve this problem.