What's the "internal memory card"? If it's an SD-card you can take it out and try any free or paid recovery program for SD-cards on your PC. If it's RAM it's more difficult.
But why should anybody use the built-in RAM for photo-storage?
My mum said she had accidentally deleted some precious pictures off from her blackberry phone while she was re-setting it. She's really sure she had saved all these pictures on the inner memory card. Can anyone help her to restore these pictures back?