https://www.mywindowsmobile.co.uk/?region=UK&pn=Region

I'm not sure if many people have discovered this but my colleagues over at the Partner blog http://blogs.technet.com/windowsmobile4partners/ higlighted it and I thought I'd do the same. 

The site allows you to configure your device, specify web favourites and download some applications to the device.

It's a great site and tool that no-one seems to know about :(