I am understanding this better now. You trying to get internet on your own A/P. and view files of others on your A/P...
First of all what kind of internet do you have? All broadband and DSL companies have ways to make your life miserable. Some companies require you to use one specific IP address to access their services. For instance, assuming this is at home and you had someone come in and hook up the service at your residence, they probably set it up using ONE specific computer. Now that they have left you have decided to use an A/P. Is this correct? If not stop here because the rest is unimportant...
If so...lets continue:-) You can have basically have two types of service. One is what I call direct service where the computer uses its MAC address as its key to get service and as long as that computer connects to your modem, your game. OR...it uses some sort of authentication like PPoE, L2TP or what ever.
Either way you will need to go into your A/P and either clone the MAC address of the system that they used to set up your service or change the settings of your A/P to login to the service. My broadband provider uses PPoE service and I have a user name and password that the router has to give to be allocated an IP address on the system. I have also used companies that used MAC address recognition as their key. If this does not strike a bell then you may need to ask your provider.
Is this any help so far? I will continue as soon as we can get internet rolling.
What kind of A/P are you using and what kind of service are you connected to?