I purchased a 1 GB Sandisk card for my Tungsten E2 and recieved an ultra II 1 GB card instead of the regular one I ordered. I was told to format it because when it is in my PDA I am told that there is no card there. When I put it in my SD drive on my PC and try to open it my desktop disapears and I have to pull the card out for it to reappear. How do I format it? Can I format it? Will it even work on my Tungsten E2 when I do? Can someone please help me?