@lululee

If you are not afraid of using the command line, here's a powerful tool for you: http://gnuwin32.sourceforge.net/packages/rpl.htm

 

I use "rpl" (and "grep" to find strings) all the time to mass-change strings in Poser files (even on multiple subfolders). I use linux myself as a platform for Poser, but I believe the link points to a direct Windows port so it should have equal power.