PDA PDA PDA! I must say that although I know that I should have one, but I am at a loss as to which type to get. Do I need a Pocket PC or Palm operating system? Does it matter? Are the programs available in both formats? How much memory is recommended? I read a few reviews of the Treo 700w (a phone and PDA in one) and the MDA by T-mobile but am clueless as to which one (if either ) is the better choice for the SRNA/CRNA. Any help would be much appreciated.