You should be able to use the TCP packet type with PingPlotter to trace to the Teamspeak server. Most teamspeak servers listen for TCP packets on both port 14534 (for the web interface) and port 51234 (for the TCP Query interface). Try changing to the TCP packet type and targeting one of those ports and see what you get. For more details on configuring the TCP engine, see here:

http://www.nessoft.com/kb/51

- Pete