For a 128mb card you will get about 100 full resolution images from that camera.
I can't find the comparison table currently, but i know my dad gets 100 images from his olympus 4mp camera onto a 128mb card so it shud be similar.
If you can i would suggest getting a 256 or even a 512mb stick for your camera. The prices for memory have dropped very low now so it is much cheaper to get a bigger card.
chris