The issue isn't something with poser, its something with the operating system.

Windows XP/2000, which are the req for the current version of poser (PC) limit a program by default to 2 gigs of ram at maximum. Poser itself uses roughly 400 to 600 depending on other variables.

Poser could be written to use greater ram, but would still be limited to that limitation as a whole.

They could, of course, create a 64 bit version, which would be useless for the greater number of their users.  Or, they could wait and see what sort of restrictions come with Vista when it ships.

In the interim, note that poser is not a patient beast, and will not wait for windows to handle VM on its own -- it needs the space readily availbe, so be sure your swap file is of reasonable size.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)