Hi all, I am trying to create a collection to be used for software distribution (install and uninstall) but not having much luck so far. As a result i was hoping that somebody could offer some assistance....here's what i have so far: App1Collection InstallApp1SubCollection UninstallApp1SubCollection The query which i used to populate the App1Collection and InstallApp1SubCollection basically checks the group membership of an AD group (e.g deployapp1) and if the computer object is in that group it populates the collection - THIS WORKS FINE Now the problem that i am trying to overcome is that i would like the UninstallApp1SubCollection to be populated with the coressponding computer which is taken out of the initial AD group which was used to check whether or not the app should be installed. I.e i would like my collection to work as follows: computer1 and computer2 is added to deployapp1 AD group InstallApp1SubCollection is populated with computer1 and computer2 computer1 is removed from the deployapp1 AD group UninstallApp1SubCollection should now only contain computer2 Is this possible????