Cat adsl + router to share it

I want my computer to open a legend sf.8m the adsl
but with a lot of ways to try routing outside the network is unable to enter, then use a dial-up adsl cat, you can enter
problem is that my home has 3 2 computer for too long have no way to the Internet, and my wife wanted me to do a good job in fierce West …
there is no way that I used the extra router that I can access 2,, ” br> router that is used to establish a lan shared adsl