Sadly, since there is no File Sharing system in place for the Fallout 3 game, you cannot download them on the Xbox 360. But if you have Xplorer and Xasta, then you can download XBox 360 oriented (Meant for the XBox 360 and not pc) and port them into a saved game file.
Some of the smaller mods are freely downloadable, but to take advantage of a massive archive of Falolut 3 and Oblivion mods and utilities, simply create an account. It's free and you won't be spammed, I've been a member and contributor for years.
I think you have to get the GECK download first.
this is a great site to find out how to mod fallout3 and it haves downloads for fallout 3
http://www.fallout3nexus.com/
No, PS3 and Xbox 360 do not have the right kind of file system for this to possible
Game mods are only available on PC games with a very small number of exceptions. Fallout 3 is not one of these exceptions, so you're out of luck.
At the fallout 3 website (www.bethsoft.com) download the geck to make mods!
Joining enables you to download bigger mods so if you like mods, Yes.
In Fallout 3, there was a site called "Fallout 3 Nexus", from what I understand it was where everyone went for mods. Similarly, one was made for New Vegas named "Fallout New Vegas Nexus". You'll be able to find all the mods you could ever hope for there (just google it). Be sure to download the Mod Manager, it makes mods easier to use.
Yes, you can install Fallout 3 PC mods from Fallout Nexus onto the PS3. For a tutorial, see: http://fallout-mods.blogspot.com/2010/11/fallout-3-mods-for-pc-on-ps3.html
there are no PC mods for Fallout 3 on PS3. Why do think they call it Personal Computer
just mods basically
If you have Xbox live. Maps on halo 3 for mods. go to bungie.net, make a profile with your gammertag and look for the mods under community. just simply type in mods under the map seciton. it will automatically download to your 360 if you click download on it. I recommend planet mod.
fallout3nexus.com
Yes.
Yes, you can mod Fallout 3 and lucky it's not to complicated. Simply download Xplorer360 or (what I recommend) Xport 360. You also need to find a Fallout 3 save editor, or the G.E.C.K. modded for use on the 360. Once you have everything you need (including some sort of transfer cable, of course) you just follow the instructions, and enjoy your mods. Also there is an EXTREMELY small chance you will get caught, because if you do it right they will never be able to detect the mods. Read for a profile tool: http://forums.techpowerup.com/showthread.php?t=77427 As for the G.E.C.K. I found a link on codejunkies.com so it will probably always be there.
Unfortunately no. The PC version is the only one that can be "modded," though you can Hex Edit the Xbox 360 version.
you cannot mod fallout 3 on xbox 360