How do I setup wrt54g wireless router with centurylink dsl?

I have a wrt54g wireless router and for some dumb reason I decided to press the reset button. Well, now it won't connect to the internet and Centurylink and linksys (The makers of the wrt54g) both refuse to help me unless I pay them. Is there anyone that knows how to set this router up so that it will work?|||I have a wrt54g wireless router then now it won't connect to the internet and Centurylink and any link system