Loading an html file in to a frame

My problem is that I have a site with three frames (top, middle, and bottom) and I am using a flash navbar in the top frame and want on mouse release to load a difrent html page in the middle frame. Can any one help me? Much thanks for any ideas.

Hi endy,
take a look here: http://www.kirupaforum.com/forums/showthread.php?t=63758