As an alternative . . . get an iPad, use LogMeIn (have to buy the App for the iPad, but use the free service on the PC), and manipulate your desktop from the iPad. Takes a while to get used to using the iPad's on-screen keyboard (unless you add on a BlueTooth keyboard), but: (1) light weight; (2) long battery life; (3) provides full PC capabilities; (4) relatively inexpensive; (5) if need to, can sit at PC and finish what you were working on with full keyboard, mouse, etc.; (6) coolness factor of iPad. Our provider loves working this way!
