I was able to configure my network connection using wvdial.
Now i cannot browse the internet at all but i can ping the ISP.
I had tried to use Firefox , Konqueror & Epiphany browser but it failed although i did many configuration in the browser/proxy but no avail & whenever try to use any website address to test the browser( www.google.com
it displayed ( Name is incorrect/wrong/invalid ).
Any suggestions on what I can do to fix this?