[Serusers] instatnt messaging and windows messenger

Hi Everybody I installed SER and it work great but i have a little problem. i want to use windows messenger as a client.But when i login with it to SER and add another users to my friend list i do not see them online,they are realy online but user status show them offline and on another box they see me offline too, it seems there is a problem between SER and windows messenger. so users cannot send instant messege to eachother (because they are always offline). I tested both windows messenger 4.7 & 5, version 5 has another problem to delivering the messages ( i saw the SER mailinglist archive before ant found it)but on both of them users always show offline. any suggestion?what is the soloution? do you any client that can act as windows messenger and compatible with SER? Please advice Alireza