Draw Text on Windows Desktop

Hi,

I am trying to do something which should be very simple. I want to print a string of text onto the Windows Desktop (similar to the "Identify" button in the display control panel).

I have used the GetDesktopWindow and GetDC API calls to obtain a graphics handle to the desktop, but this is where I can't figure out the rest! How do I actually draw a string in a custom font (i.e. HUGE!!!) centered onto the desktop? I have tried all of the DrawTextEx, TextOut, etc... API calls that I can find but none seem to do the trick! I have also tried looking for examples of similar tasks but nothing really helps.

I hope that somebody can help me out!?

Regards,
DJ