oh...wow...very likely you are right...never even know about the new Viao UX50. That is one sexy piece of expensive hardware.
I did a fast google of the thing and it's neat but more then one reviewer said reading text was somewhat of an issue. Not sure if they are talking about web pages that do not support larger fonts or what. I would imagine any of the ebook reading apps for xp will look just fine one you make the fonts larger.
Here are a couple YouTube videos I found when searching, maybe they will help the OP??
http://www.youtube.com/watch?v=mmIfiD3g9mw
http://www.youtube.com/watch?v=wu7s5Y-9yAU
This video review might help the most:
http:///www.youtube.com/watch?v=2rMw...eature=related
Not sure I could see using it as a main/primary reader after watching that...and since it is running an Intel either Core Solo or Core Duo the battery life will be kinda short.
thanks for pointing out I likely was on a different wavelength then the OP.