Thank you for taking the time to read this,
I have looked at the available documentation but I can not seem to figure out if this is possible:

1) Would one machine be able to tunnel over a DSL line for which it does not have the authority to transmit using the DSL username/password, to a machine that is connected on the same DSL/ISP service at a different location?

2) I do have the username/password for both DSL services as I own and pay for both accounts but but do not want to use the username/password on the first machine because I don't believe there is a challenge in doing so.

If this is possible could someone point me to the available information so I may read and learn about this.

Also this might be better suited to be in the specialist section but I was unable to post there.