Posting to Twitter using their OAuth

Hello Geeks, Well, I have a little project here.. waiting for some talented skilled PHP programmer to complete. In details, We used to have our social publishing service that posts updates to Twitter. We were using Twitter basic authentication method, which was phased out, and no longer working. All we need, is turning to their new OAuth authorization method. We can register our software on Twitter and supply any necessary data to the programmer. The script will simply has a message POSTed to it, and its job is to post it to twitter in turn. You don't have to worry about the POST thing, all you need to do is to work the posting to Twitter with what it takes. What I have to say, is the user will need to authorize our software only once at the beginning.. And so.. all his updates will be handled automatically in the future. Waiting for your nice and decent bids.. - Hasan