Not to step over any one else's advice but you can take svdl's advice a step further. Depending on the size of your screen, here's what you do: create a window with the dimensions as close as you can get (Window/Document Window Size). Poser can create an 600 x 800. [I don't think it can go beyond 999 or something.] Okay, you've got this giant window taking up all your space (again, depending on your monitor). But here's whatcha do. Open Document Window Size a second time, check off 'Constrain aspect ratio' and change, say, the width to a more desirable size for your monitor. The height will adjust accordingly. Even if you click and drag now, the window will retain the ratio. Here's the final step: when you're ready to render, if you indeed need the larger size, render to a New Window. Make sure under Render Options you 'Match Document Window' and the 'Constrain' option is selected. Now type in 600 for the width and boom!, you should get 800 for height. (That's of course if your original document has the correct ratio.) Just another helpful hint from the Book of Ken. take care and hope it helps kmw