Update Label On Another Thread?

Hey Experts,

I have a splash screen, which is just a form that creates a thread for itself (so that the people who use it don't have to).  Anyway I am hoping to add a label to update with information, but as it's a completely different thread I can't see to find a way.

Anyway, how can I update a label on SplashForm from a method call in MainForm.  It currently works similar to the following:

(In MainForm)
SplashForm splash = new SplashForm();
splash.StartSplash(); // Which contains a method to create a thread
// Do actions
splash.LoadingMessage = "MyMessage";
splash.CloseSplash();