How do i move photos stored on my Blackberry Curve to memory card ?

I have a Blackberry Curve 8900 and have taken a few photos that are stored to the phones memory.I cant get these photos downloaded as when i plug the phone into my PC and turn on mass storage they are not in the Picture folder but they are on the phone and i can view them.

I have now put a memory card in the phone so how can i move the photos to the memory card ?

Thanks