Not sure if this sent properly last time,so forgive me if it gets posted twice.
I want to display a countdown timer in a cell on an excel worksheet (or it could be in a box/form) that counts down in hours, minutes and seconds. Basically, the user enters the time allowed in one cell (say 3 hours in the format 03:00:00), presses a command button, and the timer counts down in another cell. It should also display the elapsed time (in seconds) in a third cell.
So, for example, you type 03:00:00 in A1, the countdown timer displays 03:00:00, 02:59:59, 02::58:58, etc. in A2 and 01, 02, 03, etc. in A3.
It is for a game and the user must always be able to see the timer, even if they are doing something else on the sheet. Also, the third cell must be in seconds because it will be used later to deduct credits for every second they use up.