:o)  I can assure you it works.  There's another hack you can use to make Windows Xp reserve 1 Gb for the OS and allow 3Gb for any program.  (overcoming the 2 Gb limitation).

http://www.keindesign.de/stefan/poser/3gb.html

 You need MS Visual Studio to do this (the free version will work).  I applied this to Poser 7 and Vue 6 Infinite without any problems, but as the author says "use caution" .  I'm not ready to go to Vista yet, I've finally got XP working the way I want it :o).