XP Profiles

Logged in as Administrator, I set up MS Office on the 18 XP Prof. workstations in our computer lab. Then I set up users (“limited”) since I don’t want the students to have admin rights. When the first user logged in and wanted to use say, Word, itsaid the program wasn’t installed. I logged back in as Admin and Word was just fine. What do I need to do to allow access to programs but still maintain security?

Thanks in advance…