I can't install mods that are in.zip format on minecraft 1.7.2 forge?

I'm trying to install some mods on minecraft forge 1.7.2 i have installed all of them except one there are 3 mods 2 of them are.jar format the last 1 is.zip format they are all 1.7.2 mods but when i put them all in the mods folder and open minecraft the only mods that are in the mods tab are NEI and chickencore the third 1 (rei's mini map) does not show. Any answers would really help thanks!