As to your other question, the size of your document window is normally constrained by the size of your workspace. For instance, if your desktop is running at 800x600, the document window cannot be larger (and, in fact, will be a bit smaller to leave room for the menus and controls). However, you can have Poser render to a new window, rather than the workspace's document window. The new window can be larger than your actual desktop (it's scrollable). You should be able to set this up in Render --> Render Options.