Multiple Purchase Options

[agxer]

Hi,

I am building a site whereby people can purchase photographs as either different size prints, OR as different size stock photos.

I do not want to have to have different products for the same Photograph, i.e. I want to have the user click on a Photohraph, then have and option to purchase as a Print or a Stock Photo, then depending which option they select, a different list of sizes appears.

Does anyone have any ideas as to how or if this is possible?

cheers.