Many people on the internet are going to tell you plain and simply: "You can't." DO NOT LISTEN TO THEM! Believe me it is quite possible. Anyone who says you can't is wrong. It is actually very cheap, or even free if you have a transfer cable already. Here is a URL to a useful tutorial containing a modded save file:
http://www.squidoo.com/oblivion-modding-xbox-360
There are many more like it, which do different modifications.
Yes. Modding Xbox 360's is actually very easy. You can buy kits that have Clear cases and LED lights inside. You can get them from a lot of places. Or you can take it in to an actual place and they will mod it for you. It is really quite expensive though.
No, but there are certain glitches such as multiplying items, walking on paintbrushes to get to high places, etc. If you want to know how to do those things then read the rest of my passage. In order to duplicate items you MUST have arrows. Press RT with any weapon other than your bow, (Your hands will do fine), but before your attack ends press B so that you go to your inventory.Next, press A on your arrows until it says "You cannot equip items while attacking", or something of that nature. Then, press X on the item you want duplicated (drop it). And last, exit out of your inventory. The number of arrows you have determines how many times the item will be duplicated.
There aren't any new ones that I know of, but the Shivering Isles/Knights of the Nine expansion pack came out a few years ago. If you don't have that, look it up, it is a lot of fun. The next game in the series, The Elder Scrolls V: Skyrim, comes out 11/11/11. That's what I'm waiting for.
Yes and no...
You can use a save editor to edit player stats or add items to your inventory, but you can't add new content or change hard coded data (Which i just about everything on the xbox).
http://www.squidoo.com/oblivion-modding-xbox-360
a very easy to follow tutorial
No, you can't mod the console versions, only the PC one.
NO. mods are downloaded from skyrim nexus and skyrim workshop via steam and are ONLY for PC (as far as I know, it might change)
There is no way to get mods. Modding an Xbox 360 is against the terms of service.
No, you can't mod the XBox 360 version.
you cannot mod fallout 3 on xbox 360
Impossible. An Xbox 360 System cannot be Modded For games. and it's Illegal to Mod An Xbox 360 System too.
Unfortunately you cannot get the Pixelmon Mod on Minecraft for the XBox 360, this is because you cannot mod the XBox version currently.
In order to play a game that you have downloaded and burned to disc on an xbox 360 you have to mod your xbox. If you mod your xbox and log on to xbox live you will be banned.
mod chips will let you copy and burn games for your xbox 360 so you can play them with out paying in a shop
Yes!
The Aether mod is not available for Xbox 360 because you cannot download mods on the Xbox 360 version.
You can't mod the XBox 360 version of Minecraft.
You can't mod the XBox 360 version, only wait for it to be added by an official update.
No. You can't mod the XBox 360 version.
Pokemobs is a mod at the moment only for p.c. It is not on xbox 360 yet.