HP 8570 C Medalion hard disk removal

I can't figure how to get the hard disk our of the case of this computer. I have opened up both sides of the case and the hard disk is in the cage with the CD players and floppy etc. The hard disk has a screw or screws on the far side that hold it in the cage and there is no hole on that side for remove the screws. I assume that the whole cage comes out, but don;t know how to get it lose. I tried removing the front, but it seemed like I was going to break it if is has a screw somewhere holding it. I just want to change out the hard disk. Hope this is clearer.
wes11