Zone Alarm can be and is used by many to block Poser 4.03 attempts to check your PC and Network for other instances of Poser. It may work similarly for P5. This is usefull in the Mobile/Desktop situation or Internet PC/Poser Workstation network or if you have 2 instalations of Poser on 2 different drives on the one machine i.e. working on two seperate projects at the one time. Regards STORM