I'd like to create an interactive prorotype for user validation of some early wireframes. Windows Mobile is the first priority, but I'll need iPhone, Blackberry, Symbian, Android and Palm webOS as well soon. Basically, I'm looking for a set of pre-made UI widgets in Azure to save me time. Any guidance would be appreciated.

Hi LisePilot,

There are some sample widget libraries here http://www.axure.com/widgetLibraries.aspx that include some mobile ones based on the Yahoo! stencil kit.

Also, the prototypes will run on Android and iPhone devices (with a little tweak for iPhones) if you want to run the prototypes directly on the phones.