>That article was very useful, however, I'm having a problem with the two timers. I'm actually using your code to pop up a login screen after a set period of Idle time, however, the timer which is binding the KeyPress & MouseDown events of each form seems to be resetting the first timer. This means that the timer which pops up my login screen after a set period of time will never kick in, as the binding timer event is set to run every 15 seconds. Do you know any way around this problem ??

I don't know why the binding timer would reset the other one. I don't see anything in my code that would have that effect. You might try setting a breakpoint on the Reset method of the idle timer to see when it's getting called.

Tamar