as i mentioned above, i dont have a real network card on my desktop pc. i only have a tp link wireless receiver. though my mobo (p8z68vlx) has a lan port. i can receive internet with the wireless receiver and i can also connect to my friends wireless signal on the bottom right on win7. but when i entered dota i cant seem to find the server created by them n they cant see mine, all my firewall is set down. this applies to all my other games. pls if any1 has the same settings or has any idea on the subject pls shed some light on this matter, thanks. much appreciated.