Problems with formatting memory card

I'm guessing you're trying to format a new 4GB SDHC card? If so, am sorry to say that your camera was designed before the SDHC format came out. Although it looks exactly the same as a standard SD card, the format the card uses is very different.

You'll need to instead purchase a standard SD card (those that are 2GB or less). Forunately these are very inexpensive these days, with 2GB cards going for around $6 with shipping.

But if you must use 4GB, Transcend makes a 4GB standard SD card, but I can't guarantee that it will work with your camera as anything above 2GB for standard SD may have compliance issues.