Halo pc internet connection problem

[Rabiez]

i installed Halo in my pc and i download the update 1.07 in order to play in the internet.
I connect to the game server and when i join a game my ping is 1000-2000 around and it lag like crazy. (the bottom right icon of my current connection is flashing all the time).
My connection is adsl 384k and i have firewall zone alarm with the ports open
(i have allow the game to join the internet).

Plz help me. dont know what to do...

[DuffMan]

Something must be eating all your bandwidth for that to happen, what else is running when the game is? I know if may sound stupid but any P2P programs running in the background, I know a lot of people forget they are sharing files and leave it on in the system tray.