Sharp/Willcom D4 - maybe it is your handheld replacement?

http://www.pocketables.net/2008/08/review-willcom.html

I like many of you love the great handhelds of the 1990's and have been searching for a replacement.  While it is not perfect as the battery life is only 3 hours, it is a full Vista computer that runs Vista very well and will fit in your jacket pocket!  It can be found at Conics.net; it is a little pricey but it can be your sole mobile pocket handheld full PC.