I am looking for options to provide customers on my website a way to order prints for photos. (It is a photo sharing site, so it needs to be automated, I don't want any portfolio sites that require uploads and what not).

Basically it just needs where I send them the photos, the address, (and possibly billing info) and they make the prints and mail them out.

I have searched all over the place for such a system, but none seem to offer what I want.

I tried hacking snapfish (which worked, but it says "Return to Picasa" on the buttons, which makes it sort of lame...)

Any ideas?