I have several Norstar Modular ICS 0X32 key sets running Release 1 T1 software. I have been using Norstar Manager for Windows release 3.1 to manage these systems but I have been unable to make the manager software work on today's new operating systems. (Windows 98, 2000, & XP) What release of Norstar Manager will work with Windows XP, and will the newer version work with my older key sets? These key sets and RADs date back to 1996. Will I have to upgrade the key set firmware and go to the Fast RAD to get the newer version to work?