I bought an acer laptop on 03-02-08 along with the

i bought an acer laptop on 03-02-08 along with the warranty, and about the past month or so, it won't connect to my road runner internet. Time Warner says the internet connection is fine on their end, and it should be working, but it keeps saying that the computer access codes is not set up for internet. i have had nothing but prolems sice i have purchased this. what do you suggest i do with this thing. I am fed up with getting the run around from eveyone, I either want a new one or my money back, all $640.34.