I try and keep most maps under 300k, 250k is even better. As others have said, Poser only worries about the physical size, but people still have to download the files. I'm under the impression that Poser loads maps more efficently if they are in mutiples of 8 bits- or 256, I make a really hi-res map 2048 x 1536, for example. I see no reason to ever go past 2048 x 2048. myself. PhotoShop 5.5 and up does a really good job on jpeg compression, I think. Incidently, DPI is just a figure of speech on texture maps.