Normal, superfine , etc are just how much it Anit-Aliases. Bryce's default as mentioned above is 72 dpi I beleive. To get the size you need to render at you must multiply the dimensions you want by the dpi you wish. (i.e. 11 X 14 at 300 dpi would require a render at 3300 X 4200) which something that big can only be rendered to disk. Warning: with render to disk, if it stops for any reason you'll have to start the whole render over...there's no save while rendering option.