For my game, I'd like the AI to run in the background for X number of
seconds. I don't want it to lock up the UI while it's thinking.  In 
other languages, I've done this by firing off the AI
as a thread, then creating another clock that sent a "stop" message to
the AI after X seconds.

I see implementing the clock as a Delay class.. but need a bit help
figuring out the details of forking off the original AI process.

Can someone point me to docs or examples?