Flak, I dont know if you need these sequences as stills or animation frames. If they are to be anumation frames, dont use AA! The motion of the animation will cancel out the fine work. Bicubic resizing is good for most general graphics work but if you have lettering or many straight lines in your work then bilinear is the better option. It is always good to double your size. If youre doing CG for games, work at 1024x1024, these sizes will be taken down to 512x512 or more often 256x256 in the gaming engine therefore larger bitmaps would resize down better than having to resize up. If your work is stills, then yes AA is essential even if it has to be faked. Lets face it, most people wouldnt know it were AA in post work or during production unless you told them. Usually, unless youre very good at post work, will people be able to tell the difference.