See My isp Is GTTPL And You Can Search About it on internet...... but now the problem i am facing is that i have put the wire in the router and then i have i connected one port to my PC Having XP Configuration and it works and i am able to access the internet after creating a connection and putting my username and password ....... but then i have given a connection through a wire to my friend and he has windows 7 In his PC When i repeated the same steps of creating a connections and putting in the username and password in his PC . It Stops In Between At The Stage Of Verifying username And Password and gives error 691........ How To Overcome This ????