I am planning to get my wife a PDA for Christmas. I am a bit of a computer geek myself, but I have never even used a PDA. The first thing I noticed when I started looking is that they come in two flavors, Palm OS or Pocket PC versions. I don't have a preferrence, but I would like to get some opinions from people who have actually used one before. I would also like to hear recommendations regarding specific brands and models. The only requirement is that the PDA have built-in wireless capabilities. Thanks for taking a look.