yea there are
No they are two different platforms. A PC gamer will not be able to play with an xbox user and vice versa.
1st yes 2nd you have to have the code for him and 3rd xbox live silver is free and when new user get 1 month free
Not with a risk of being banned for cheating and other violations of the user agreement for Xbox Live
yes, unfortunately you have to buy a separate xbox live membership for a different profile even though there on the same console.
Unfortunatly, you can't. You have to buy two separate subscriptions. That's why PS3 is much gayer. Online play doesn't require pay.
No as long as you have a good Internet connection you can connect to xbox live
Xbox Live is a World Wide product and service and should be avilable if you have an internet connection and an Xbox Live account. Have all of these and your good to go.
No.
wasting your money
I dont know their names
If you can't play user-created content in Halo 3, that means your family settings wont let you. Go to family settings on you Xbox Live account (on the website or on your Xbox 360) and change the Member-created content setting to everyone. _____________ i hope so too... ____________
bealzeabozz