Wireless concetion problem

Hello,

I need an advice on how i am going to fix my connection problem...... I used to have a time warner cable connection using lynksys wireless-g and no problem at all. the ethernet cable were directly connected to the modemn to the lynksys wireless router and i never had any problem at all, i can even go wireless so i was able to connect to the internet anywhere in the house and outside the house.

Since there was a promo on the AT&T i decided to switch right away thinkung that i coould be able to save a little bit, unfortunately, my idea of switching wasnt good and smart enough because, now i cannot use my laptop when i am in the living room or transferring from one place to another because the ethernet cable has to be connected to the laptop all the time. I can't use the lynksys router anymore.....

Do you have any solution to this problem.... If so, please send me the instruction obn how to fix the problem..... I wanted to be how it was when i am on tome warner cable...... I would still prefer to go definitely wireless..... Please send all instruction to my e-mail add. that i've provided.

Thank you for your help and GODBLESS.....