Question : Script to add user to multiple PC's

Does anyone have a powershell/vbscript that I can use to add a specific AD users to multiple PC admin groups?

Answer : Script to add user to multiple PC's

Have you tried the Application object for storing state? It's scope is broader than Session, although perhaps not broad enough to span both services. Do both services exist in the same application pool in IIS?

Application.Add("mySharedList", myList);