OK, I have descided that I want the Compaq IPaq H3670. (The 64 meg pda). There are two different sleeves for it, a compact flash sleeve and a pc card sleeve. I know that the cards are different sizes and stuff, but what I need to know is the other differences between them. How much is memory for each type. I saw on compaq's web site there were memory and storage pc cards. What's the difference. Any help would be greatly appreciated.