Watch this video:

Source: Video: iSwish puts the iPhone UI on any Windows Mobile phone - Engadget

Btw, if you’ve outgrown Windows Mobile and are using a Palm, ZLauncher has an iPhone skin that can pretty much make your Palm look like a static (non of the finger flicking stuff unfortunately) iPhone. It’s the only skin I would use on a Palm. Somehow Apple did manage to nail that simple yet elegant feel.