ok, the window channel is the rubber that fits up inside the door frame that goes around the window.
as far as the screw goes, once you pull out the window channel, there should be a screw up inside the door near where the top of the vent window on the inside of the door frame.
Sorry if I am not making myself clear enough
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WinterJam 2010: Vdub, Surf, Skate & Musis Fest
WinterJam 2010
'I drive way to fast to worry about cholesterol!'
'67 Sunroof Notchback * '68 FI Squareback