Yes you can. Points are used to buy Adds-on such as maps, equips,etc
There is no "The Xbox Live", Xbox live is simply a pay-to-play game service where you can play Xbox 360 games online. It depends on the game if you can play it online or not, the game's box should on the back say if it can be played online.
Xbox Live Gold Membership and Microsoft Points are two separate things altogether. The 1600 points you are refering to are Microsoft Points, used to buy Add-ons, Xbox Live Arcade Games, Premium Themes and the like. This is completely independent of the Xbox Live Gold Membership, which deals with Online Play. In order to utilize Xbox Live Gold Membership, you must either buy a pre-paid card which states the amount of time you are buying, or initiate a pay plan with a credit/debit card. In short, assuming you are looking for Online Play, the 1600 points you purchased are useless
You do not need xbox live to play Tom Clancy End War. Xbox live is only necessary if you wish to multiplayer.
No, an Xbox live silver account does not let you play online.
You have to be on Xbox Live to play it online.
Because you have Xbox live and MW2 can be played online?
You do to play online on the Xbox 360 only. Other systems also have online games
You can purchase Microsoft points from any game store or online.
Yes, XBOX live, or "online play" is included.
You do not need xbox live to play Star Wars Battlefront. It has campaign mode as well as custom matches with AI opponents. If you wish to play online with other human players then you would need an account.
You can play any online game without Xbox live.
Yes, you can play Halo 2 online on the Xbox 360 using Xbox Live.