How to port-forward through two routers?

Hello Everyone!

My problem is that the first router in my network is a shitty one (Ubee DVW3200) provided by Time Warner Cable, but I cant trash it because it converts cable to internet. This router has very poor WiFi range and speed. I then have a Netgear WNDR3400 high performance router in a better location that always has the best speeds and signal. I currently am using the Ubee WiFi because i need to port forward through it and can't figure out how to forward through the Ubee router into the Netgear router then to my PC.

Thanks guys  
-Mr. Minecraft