I get questioned a lot of times, where to find new or different mobile controls from third partys.
First of all I’d like to point you to Resco.net. With the MobileForms Toolkit you get new forms, which are enhanced in touch functionality.
A list of all included controls including screenshots can be seen here. The toolkit itself is compatible with VS 2008 as well.
A smaller set of interesting UI components can be found at http://www.beemobile4.net/.
As it looks like this company is just starting, the included elements look promising. Especially the offer of suggesting new elements looks promising.
But what do you do, if you want to create your own alphablended or transparent controls?
In this case you shall have a look at Alex Yakhnins post to see, how the basics work.
If you aren’t interested in creating evereything from scratch, you are probably interested in taking a look at the AlphaMobileControls on CodePlex.
These available base elements can be used for developing more compelling controls, if needed.
The AlphaMobileControls have been shortly covered in our WebCast Series as well (unfortunatly in german only):
Windows Mobile für Profis (Teil 3 von 6) - Wege zu ansprechenden Benutzeroberflächen unter Windows Mobile: Alphablending, gradiente Farbverläufe und Transparenz