Control Panel - Look and Feel tab. You then have to click the drop-down beside the Silver Red v2 (Import) setting. Select Edit HTML Template, the click Board Index, then click Stats Header. That gives you the window with the code for the countdown clock. I usually just select all of the code and drop it into a text editor such as Crimson Editor. I save the current code on my system, then edit and save the changes and copy and paste it into the window. That way, I can always revert if something goes wrong.
I'm stuck at home with - believe it or not - Swine Flu. I can get all of that tonight if I'm awake - or whichever of us gets to it first.
The header is a different story, and a tad more complicated since you have to adjust the CSS settings anytime something is added or removed. But nothing to change there at the moment.