Hooking Cisco 3212 to Netgear N450 / CG3000Dv2 for wifi ... Please ..!!!

I'm subscribed to Cox Preferred package in Phoenix, currently using Cisco 3212 Modem and all systems ( wired internet, home phone line & T.V.) are all working FINE. I'm now trying to get wifi in my place and just got a Netgear N450 / CG3000Dv2 (which don't have ports for my home phone line). I've tried multiple ways (please believe me cause it's been 3 nights) of trying to hook up my Cisco 3212 Modem to my Netgear N450 and could not get internet through wifi signal.  

I GIVE UP ... Call Me Stupid or Call Me What you want... It's O.K. ... I give up  ... Please help me in hooking up my Cisco 3212 to my Netgear N450 / CG3000Dv2 so I can get internet through wifi while keeping my home phone line working.

I hope to have some better sleep & peace of mind SOON ....!!!

Help Me Please - Thank you ... !!!