Basically can't switch between vents?

i have a 03 oldsmobile alero 6Cyl,and i recently installed a new ignition on there i removed the center bezel to work,taking out the radio and ac/heat control switches (three knobs low to high,temp,and vents,when i put the vent control plugin on the back on the control knob all back in well i know i got it all wrong,but it does blow on my foot vent right now,everything else is fine just cant switch knobs..lol..wondering how it goes back together correctly,If u can help be great, Takes a minute to cool off in my car and i have a 18 month lil girl..thx. Kimo