No you can't do this. Unless you are using a game specifically made by Microsoft to play from a PC with Xbox live users. (EG: shadowrun)
There is no way. PS3 users play on "PlayStation Network". XBox users play on "XBox Live".
You need an Xbox, or Xbox 360, and an Internet connection for Xbox Live. No computer required.
You don't need a computer as long as you have internet to hook up your Xbox to you will be able to play Xbox Live.
No.
You can not play DeadFrontier on xbox live, the game is stricly a computer game.
U have to have xbox live
Yes.
No, xbox users cannot play against ps3 users.
yes, it can.
XBL stands for Xbox Live, and is Microsoft's online service that allows xbox users to play games online and download content from the marketplace.
There are about 23 million ONLINE Xbox users. The total amount of ALL the Xbox users is unknown.
No live is restricted to Xbox 360 consoles whose users have also purchased Xbox Live subscriptions and the Playstation products play on the Playstation Network for both PSP and PS3 without any charges or fees