How do I install the themes once I've downloaded them?
You need to copy the .tsk file to either the My Documents or Windows folder on your Pocket PC. To do this, make sure your Pocket PC is in the cradle and turned on. Then, double-click on My Computer | Mobile Device. Simply paste the .thm file there. Or, if you have a MyDevice_MyDocuments folder on your desktop, copy the .tsk file there. Then do a sync.

Once you have the .tsk file copied to your Pocket PC, click on Start | Settings | Today. There, you can select any theme and click OK on the top right.

Download theme

To view the Start Menu, hover your mouse over the image.