I am asking because the mods i was working on with Fallout 3 i do not know how to convert them i read on how to do i need visuals thing to show me how to do it. Cause i am a visual person instruction's when i read don't always make since in my head.

There's some things visual instructions are necessary for. This utterly, utterly trivial process is not one of them.
1. Open your mod in FO3Edit
2. Change the master in the header from Fallout3.esm to FalloutNV.esm
3. There is no 3.
4. It is a two-step process.
5. Where one of the steps is 'Open a program'.

you still have to manually place it in the world i think.