Shoutbox

Hi, I am thinking of creating a plugin which will sign me in after I sign out for some specified time. Since I want to leave my msn sign in eventhough I am not at my computer or in case of that I sign in somewhere else and it disconnects my account on my computer but after that specified time it will be back again. By this way I can be online all the time. After I read the API and the sample source code in C++, I can't see how could I do it. Because the plug in will be reloaded every time the user log in and that also terminates the instance so it never works. I am wondering that whether this is possible to do and could anyone give me some advice. ( I am very new to C++ as well)