I fell over this comparison of UMPC’er in sunlight. Unfortunately, the Asus Eee PC, MSI Wind and Acer One can not – so dramatically interesting, it is not .. But you will go into purchasing thoughts on the UMPC market and want something more powerful than our loved ones, small netBook, so may it be interesting to check the possibilities for outdoor use here:
http://www.pocketables.net/2008/08/umpc-display-co.html