A. Yes (this is the only way to get the higher dpi) but if you know how to do the math you can just render it X by X pixels. b. PSD c. 300 dpi is the standard. (150 for Dyesub printing). d. 24" X 36" at 300 dpi would be a 7200 X 10800 Pixel image. that could take a long time to render. 48 hours is not that long. e. If you your image is 13" X 19" or smaller I would use the Epson 1270. looks, feels and lasts like a photo. If you need larger, I would ask the print house for samples of there prints. I have seen some great work and some bad work come off the same model printer. So ask them for a sample of there work.

You can't call it work if you love it... Zen Tambour