Displaying an Image During Installation

There's a bit of trickiness during my installation and, well, a picture is worth a thousand words.

Is there any way to post a window with my bitmap, say as part of a wait or messagebox dialog?

And if the only way to do this is via a billboard, is there a way to remove it afterwards, or say, switch from having a background to not having a background?

Thx.

Hello,

One of the next builds comes with a new Setup Progress Dialog to display your bitmaps on the progress dialog.