Your best option given that you now have 4 Gig of RAM, is to install Windows XP 64-bit or Vista 64-bit. XP 32-bit cannot use more than 3.5 Gig of RAM total, and apps can only access 2 Gig of RAM each unless the /3Gig option is used as suggested on the Microsoft site, in which case they can access 3 Gig max.

If you switch to the 64-bit OS'es you will find that Poser will make use of more memory than before, especially if you 'Render to a separate process'. This is because 32-bit apps under a 64-bit OS can now access the max limit for a 32-bit app, which is 3 Gig. Also, each 32-bit app can access 3 Gig max, so using 'Render in a separate process' means that the renderer has 3 Gig to play with without Poser itself using up some of it. This can also be made up of a mixture of physical memory and swap space.

Secondly, you will find that even if you have only say 3 Gig of RAM, Poser will still be allocated more than on a 32-bit OS because swap space also counts towards the max limit of 3 Gig, but remember that disk space is roughly 1000 times slower than RAM.

Some tips for keeping Poser running well -

1. Always defrag your hard drive regularly to speed up access to the file system. This makes a huge difference.

2.If possible, keep your swap file on a different physical hard drive to your OS, Poser and Runtimes.

3. Keep Poser and your runtimes installed on high-speed disk drives like SATA or SATA II

4. Pray to the Poser gods before each render, and regularly make offerings and sacrifices. It keeps them happy. V3 naked in a temple with a sword usually works. ;)

UA