"...would be best to render at..." You can render at a different setting than your viewing screen. Some people like to render at a high resolution 2000x2000 or higher and then reduce the image in a paint program to whatever final size they want. This supposedly provides a sharper image. In Poser 4 it's 'Render to new window' or something similar -- not sure about 5 & 6.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken