Thanks for your help with this - it does clarify what I suspected - the need to write my own module. I have no PHP experience, am really more a designer so this is pretty much what I was trying to avoid, but maybe i'll have to get my hands dirty with code!

Does anyone know if Shopify might fit the bill out of the box for my needs? I like Ubercart a lot but need something up in a hurry for a client, and am pushed for time. Not ideal I know!

Thanks for any advice!