Port Forwarding

So kinda bad with programming and what not but here's the thing

My parents have a firewall block (Netgear Router) for internet access. It comes on at 6p.m. the reason being is my parents don't want my sister on at night, but they said I could.... yet the block applies to everyone. I was looking into ways that I could get around the firewall schedule and found port forwarding.
At first tried it on my xbox, and it worked (used a tutorial), all I needed was my xbox IP and the port #'s the tutorial told me.
Now I want to try it on my laptop, but the thing is I don't know how.
I got my IP #, but how do I get ports? Is there some way to find out what ports I need to open for a laptop, or is there already ports determined? I'm lost.
anything would be helpful.

Welcome to Windows Seven Forum.

Have a look here: Port Forwarding Guides Listed by Manufacturer and Model - PortForward.com but do check with your parents first.