I have been trying to create a timer that counts down from 5 to 0 and then loops back to 5.

I have been messing around with getTimer, but i cant find a function to reset it... I tryed all my idea's but nothing worked.

Is there a way to acuratly setup a timer. Its for a game which might slow down on slower computer so i need it to be acurate and not depend on the frame rate other wise if it dose slow done some people will get an atvantage.

Are there any help files i should be looking at or tutorials?