This causes me no end of problems at work, cos I work on photo kiosks for a living....
flagpole is correct, Apple disable bluetooth file transfer on all iThings. We're working on a cabled solution (which is what I
think Jessops do) on our system at the moment but even then, because there is no mass storage mode it will only be able to see the camera roll, not any other folders you might have images in.
Your best bet at the moment is to use an app to order online - at the risk of plugging a mate's shop, I know that Fotobox have an app in the store, you should be able to find it with a search