Also, i dont have a shortcut in my start menu or on my desktop, i have to take the disk out and put it back in to play, anyone know how to fix that problem too?
I don't mean to be rude, but why are you trying to make mods when you don't even have basic computer knowledge? This is something that anyone should be able to figure out right away. Go into that start button at the bottom left of your desktop, then go into Programs. Somewhere in there is a folder for the game, probably in the Bethesda folder. Open it and you'll find the game's launch icon there. Then just copy paste it to your desktop.
also, how can i check where exactly i downloaded the game in my files? anyway, i put the geck download into something like ex "something/bethesda/fallout3". How do i know which file is correct?
Well, once you find the icon for the game, just right click on it then select Properties. The screen that comes up will tell you where it is.
Sorry if how i wrote that was confusing, basically, how can i connect my geck files to the goty files?
First read this:
http://www.gamesas.com/index.php?/topic/972878-fallout-3-mods-faq/