Chat or VoIP in Axapta

Is there anybody who made something like chat in Axapta or saw it ? I know, there is somethink like sending a message, but onlny where user use 3-tier Axapta. But in case where Axapta is 2-tier it doesn’t work. The second think is VoIP in Axapta. I thought to use Skype, and connect to this application using WinApi. For now I don’t have any idea how to do this, but if anybody did it, I will be thankful for ANY infos [8D] Grates from Prague [8D]