Of course email is out since no data plan. MMS? I don't -- never have -- used MMS so don't know how to work it with pictures, but I think that is your only option, if you can somehow send it to the blackberry's number, and MMS is working on the blackberry (which I also don't have a clue).
But there's no accessing main memory with DM 6. Don't know if you would be able to access an older model like that with DM5 and the media manager plug-in or not. I sort of doubt it. Maybe someone else knows.