Yes, you can save it with the extension .txt, but it won't make a difference. A .pz3 is just a text file in poser form, so the compression won't be different no matter what format it's in. Maybe I'm misunderstanding you. The .pz3 alone was 4 megs when zipped? It sounds a bit odd. Normally text-based files will zip down to about 1/20th of their size. Or did that include obj files as well? I just tried zipping a pz3 file of 1.12megs and it came out at 91kb. mac