How to Hard Reset a 6850?

[Tangmere]

All,

I searched for this, Really i did. Even HTC's web page is vague on how to hard reset the 6850. What I have found is hold down the Vol down button and the "Enter" Button. I have tried the "Enter" button on the keyboard, the center button, the arrow button, and the home button, and still no joy. I know this is such a noob question, but i am stumped. My unit hangs on what I think is the Touch Flo load page, but it just has the main tabs showing on a black screen.

Help!