For the answer, don't look to Microsoft. It still hasn't figured this out on phones. Witness how Windows Mobile always tried to jam the Windows desktop interface into a phone's tiny screen. Just goes to show that Microsoft is stuck selling Windows, not solutions. Microsoft execs think of Windows as a hammer, and everywhere around them are nails."
"Noticing your five-year-old laptop can still suffice for much of what you do isn't the same as product design. Netbooks still face the problems of how to be lightweight and compact while providing sufficient input options (no one likes undersized keyboards), displays, battery life, and so on. Ultimately, just the "same but less" formula isn't a good enough solution.
This is an excerpt from a great article by Dan Turner of PC World