my router is a netgear it was provided by sky i wonder if it is a router thing

i have tried everything manualy putting it all in wired and wireless it seeems to just randomly happen sometimes it works but most of the time it just doesnt let me on. i rang sony and they said that my ps3 was fine and that i had to open these ports: tcp 80,443,5223,10070,10080 und 3478, 3479,3658,10070 not being very good with computers i dont no how to do this and does any1 no if it will work if there is a better solution