Well, the onnly way you can IM someone in a certin way is to get certin IM's.... like you can get Aim, from aol. By downloading it, just got to aim.com, then downloads and it will give you information from there... if you want to get yahoo instant messager just do the same thing but in the search area type in yahoo instant messager click on the one that seems right and then just go on from there.... (it will tell you how to do it) it's very easy once you know what your doing