XP has a built in fire wall. I never used XP so I'm not the best to answer this. Basically look in control panel for firewall or some such thing. There will be a place to add "exceptions" make sure all the LSMGUI stuff is trusted and well and Poser.exe this should have happened the first time you ran poser. It would have asked it Poser was allowed to access LSMGUI. If you clicked "no" you basically have to manually undo that wrong answer now.