OK...why did you start another thread on the very same subject? Pretty pointless if you ask me.
That being said, the only other thing I need to know is the display you're working with. Is your display a two digit display or is it two individual single digit displays? Also, is your display common anode or common cathode?
Why don't you start with Nigel's tutorial 10.... Most of this is done for you 2 digit display AND the routines are written... all you need to do is incorporate a switch system and stopwatch function..