where can we find the files (config, minecraft.jar ETC).

[nosajsom]

where?

 

[expl0s1ve]

FTB launcher > options > install folder
You can see the directory here.

 

[nosajsom]

there are no minecraft.jar or config.txt or anything useful

 

[TheSandwichMakr]

If you open the folder shown in the options menu there should be all the modpacks. Inside of each modpacks folder are all the configs and stuff. I would suggest opening minecraft and pressing the open texture pack folder button then going up a directory if you can't find it.