Creating Vista Style Login Screen With Silverlight 2 Beta 2

I was trying to create Vista style Login screen using Silverlight. I've seen couple of excellent custom Vista style UI designed in WPF by the known WPF gurus. Seeing their example I thought It's also possible to try something Vista style in Silverlight. Since Silverlight has many things common with WPF. So I started to get my feet wet to create a Vista style Login Screen using Silverlight 2 Beta 2.