I own the Steam GOTY and original disc version of Fallout 3, the latter I installed first. I've updated the Data file in the (x86) program files folder with a couple of extra radio stations for my Pip-Boy. It works if I launch it through FOMM or Nexus MM, but it won't work if I run it through Steam. Are they in the wrong folder? I did something similar for New Vegas and changed the opening slides and that worked through Steam but I don't think an .esp was involved.

Basically how can I get these mods to work through Steam?

Thank you!