I've got a gig of ram, Poser 4, Max 4 and ProPack. What I have found to be a major problem translating poser to max via propack is not the 3d data but the texture maps. For example I can translate Mike 2 fully clothed without any textures into max without a hitch. But if I do this with a high res texture it brings my system to a crawl. Not to the cpu but to the memory. Now all of a sudden I'm down from 850 MB to less than 32MB physical memory and the system is at a crawl so slow that it's impossible to do anything constructive for 10 minutes or so. Why are these text maps so large in size? What would be good size to convert from to without losing image quality? My system is P4, XP, 2 gig swap file.

I always save my texture maps fairly large. It's easier to size take away than it is to add texture quality. Being that I do prints myself, I appreciate hi-rez textures in the products I purchase.

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The optimum resolution/filesize for a texture depends on a formula including the final resolution and how large the mapped model (e.g. Mike 2) will appear within that window. Try scaling the texture down a few times in a 2D paint program and rendering using the new version to find a size that's comfortable for you :)

Textures are stored within Poser in an uncompressed form, so the only way to reduce your memory usage is to reduce the texture's dimensions. How small you can go depends on whether you're doing close-up or full body work, what the lighting is like, how well mapped the object is, and how big your final render will be. You just have to experiment - but remember to keep the high-res version in case you need it later. As Judith said, you can always reduce from a big master, but expanding will lose quality.