Halo 3 xbox live question?

So I have halo 3, with xbox live gold. I wanna play with my bro using the same gamertag. Sometimes I see players and people with the same name but with (1) , (2) , etc. I've heard you have to sign up as a guest but when I do it on matchmaking it doesnt work....So what I need is a step-by-step to know how i have to exactly do this. Don't just tell me go to matchmaking, press the guide button and signup as a guest, cause it wont work.

Halo 3 xbox live question?
O.K. I called the Xbox Support line and they said that you cannot have guests with the trials. You need to have a paid subscription to Live. Sorry I know it's late and your trial has already run out, same thing happened to me.
Reply:Go Onto The Board, It'll Say Somewhere "Sign In A Guest" Press The Button And Sign In As Guest





On Gears Of War, It Works Like This:


Go On Menu %26gt; Versus %26gt; Xbox Live Player %26gt; Y %26gt; Sign In As Guest %26gt; Any Game U Choose.





Probably The Same For Halo.
Reply:After you go to matchmaking, DON'T go to the guide. If you have your second controller plugged in, just press A. (you can see a "press a to join" thingy below the host's name)
Reply:Yeah before you start matchmaking, your gamertag should be on the top right side of the screen in the list, you know? and there should be one underneath yours (assuming you have your controller plugged in right) and it should have the green 'A' button and say Join next to it. Press 'A' on the other controller to join, then scroll all the way down to Guest, choose it, and it should say





whteveryourgmrtgis(1)
Reply:you can only play as a guest in social games not ranked. So u have to change the playlist to social (whatever you want) then leave it at that screen and turn on your second controler and where it says your brothers gamertag their will be the words press a to join below and then you sellect gues profile and then youre profile will be your brothers with a 1 in paranthesis