you have to start a new xbox live account and create a new gamertag.
get an xbox live gold account, connect to the net, and play.
Yes, Halo 3 supports multiplayer Xbox Live gaming for any one with an internet connection and a xbox live Gold account
You can't create AI in Halo 3.
You have to get achievements when you playing with a Live account.
Assuming you have an XBOX Live Gold subscription, create an account on Bungie.net Once you do the column symbol should appear next to your gamertag in the game menus
It depends, if you are asking about using mics on halo 3 on xbox live, well then yes and no. If you have two xbox live accounts on the same console and each account is using a mic, then yes. But if you have one xbox live account on a console, only the person using that account will be able to use a mic. Guests in halo 3 are not allowed to use mics at anytime. Only users with xbox live accounts can use mics.
You need to do forge to create your maps in halo 3
Lucky for you, there is now a way to easily unlock recon armor. There are a few steps you must complete to unlock Recon armor in Halo 3. 1. Buy Halo 3: ODST 2. Create a bungie account. 3. Complete the vidmaster achievements on Halo 3 and Halo 3: ODST. There are 7 in all. 4. Under your account preferences, click Unlock Recon. You should now have recon armor. RUB IT IN THEIR FACES!!!
if you sign your xbox live account to bungie.net you can go to theater on halo 3 and take a screen shot of your previous game then it will automatically save to your bungie account and then you can sign in to your bungie account , view them then do what ever you want with your pics. (example: copy and paste them to your computer).
Yes, specifically, you need a Xbox Live Gold Account to play most xbox 360 games online, including Halo 3.
You have to at least have a memory unit with a live account