The filenames are visible in the Import dialog. Files ending with .CR2 are Raw files from the G9.
curiosity calling: what size reprints are you thinking sell?
12x16 size up to 18x24.
Any helpful suggestions?
the G9 is a great camera (I have the much newer/advanced G12) however I don't feel its really up to the job you have in mind. Photographing art works is rather specialized if good quality is required not to mention a good understanding of LR and/or PS.
I'm not saying you can't do it, only pointing out a couple of maybe unknowns