How many 2 mega pixel pictures will a 1 gigabyte memory card hold?

At 2mp's for 1gb, your memory card can hold at least 1,500 pictures. I had a 4mp camera with a 512 and that card holds over 700 photos.

P.S. Why don't you start looking for another camera. the costs have come way down and an affordable camera costs about 175-300. If you would like a point-and-shoot camera, go with Canon. If you would like a lightweight ultra-telophoto zoom go with Kodak or Panasonic. If you would like a D-SLR go with Canon. There is a whole lot of stuff on the market, but you should probably upgrade from a 2 mega pixel camera to at least a 7 mega pixel camera and the results are incomparable and absolutely amazing. I shoot with 12.2 mega pixel and a 23.5 mega pixel, both make you feel like you are actually in the picture.