got given a pentax k110d with no usual maual or anything, getting incredibly annoyed with it since i've tried 4 different memory cards and 2 of them did nothing, the other 2 take photos okay, so i went to a gig took some, or thought i did, and the piece of crap stored about 10 photos. That's all. So I went home and tried the other card, same thing. It won't store photos. The memory cards are both 2gb, getting so fed up! all i want to do is start taking photos! i've tried the memory cards in my other camera, they are fine. it's just the pentax, what should i do?