Some time ago i posted here to get help against my cuzin, whos downloading / uploading torrents and doing so uses all our shared internet connection ``horsepower``. There are 4 computers using 1 modem and only she is causing trouble. Anyway someone suggested me to close the port that torrent program is using (mainly she uses Azureus). Which port is it?

Try going to Options->Connection and see what port is listed.