But installing an original Poser 5 CD will right Interlok code to the sector 0 of your primary drive again. That's the potentially dicey bit. The SR's (2 and above) do not write to sector 0, agreed. Reason is they do not remove the Interlok code. They simply remove Poser from being "watched" by Interlok. Interlok is still running (it has to be in case it was already "wathcing" another installed app). There was install code to permit the removal of the Interlok drivers on PACE's site if you no longer need it, but I understand they are no longer available. But even that wouldn't remove the entry from Sector 0.