Honestly, it would probably be less problematic if the other program you're thinking of designing kept its own list of installed Poser files, and the user would run it again to uninstall things. You could have tabs for install and uninstall. My reasoning here is that some folks (like me) have too many things in their "Add/Remove Programs" dialog already, and quite enough items in the start menu as well. Keeping things within your program's interface would be a great way to stand out in the crowd :)