Finding system file problems!

[Chrisp7]

I am trying to install myWG311t Wifi card however I seem to have fallen at the first hurdle..actually finding some of the system files to edit/add!

 

i am following these steps:

 

http://forum.insanelymac.com/index.php?sho...mp;#entry238508

 

However a) I cant find : /library/systemconfiguration/networkinterfaces.plist

and I cant find IO80211Family.kext from the 10.4.5 update (using pacifist to search/browse)

 

is it something to do with permisions? I have looked around a lot and even /library/systemconfiguration/ doesnt seem to exist..

 

I am using the latest Jas 10.4.8

 

Cheers Guys:)

 

ps And please if poss its easier if I use GUi as I find terminal rather hard (sorry!)