We have to give c0ff33 from Insanely Wind, the unofficial MSI netbook forums, some amazing cred. He's in the process of turning a MSI U100 rebrand (actually an Advent 4211c) into a sliding display like those you see in the Vaio UX. The build also support a dual boot of Windows 7 and Mac OS X Snow Leopard. It's not yet done but it's getting there and a sliding mod is something different to watch out for.
source InsanelyWind via netbooked
A post from the Asus Eee PC blog.
MSI Wind mod to mimic Vaio UX slider