Pause Application

I have an app that is supposed to sleep for a predetermined time (up to 6 hours).
Can anyone tell me how to pause the application without causing the CPU usage to go through the roof (using a loop with doevents). Sleep won't work cause it doesn't pass control back to the OS!

Maybe an active X component i can download (looked but no luck!)

Have you tried using the Timer control? This control does not seem to require a lot of resources - set the interval to as long as possible.