I talked to their tech support, and he didn't think changing these settings would make a difference.
We're trying to solve a problem that sometimes you have the connection. Sometimes not.
He said that the gateway defaults to an address for the computer.
Ok, you don't have to setup a gateway... let it blank.
But he doubted it would make a difference and stated the connection might not work if you did this.
Of course, if you set this wrong it won't connect.
But this is the easy answer. He does not want to lose his 'precious' time telling you what to do.
If you do something wrong, two mouse clicks and you return to dinamic IP and DNS, I mean, you return to the original configuration.
It won't mess your computer. But you must know the DNS for God!
I don't have a router, btw. I just connect my computer directly to the gateway. I'm not sure if this makes a difference.
Do you plug the DSL modem directly to your computer, doesn't you?