I've installed FRA and it hasn't changed a thing to Fallout 3's animations. I've installed 3 times now. Did I do something wrong?
Quite possibly-- the installation instructions explicitly state to extract the *.rar file to your
Fallout 3 folder (rather than your Data folder), because the archive itself contains a Data folder (and if you extract it to your Data folder, you will end up with a Data/Data folder, which the game will ignore.... which seems to be what's happening to you).
Look in your Data folder and see if you have a second 'Data' folder in there. If so, go into that second Data folder, cut or copy the FRA 'meshes' folder you find there, and paste it one level above, into the real 'Data' folder. Say 'Yes' if Windows asks if it's OK to overwrite the existing 'meshes' folder (it is OK; it's only talking about the folder object itself, not the contents of the folder).
If that's not the issue, are you running Vista or Win7 and if so is the game installed to the Program Files folder? It's also possible in that case that Windows' UAC security functions are preventing you from installing mods correctly. If that is your problem, I would suggest that you uninstall the game and reinstall to
any location other than the Program Files folder (many people create a C:\Games folder to install the game to if they don't have additional hard drives or partitions for this purpose), to sidestep UAC's control over the Program Files folder messing up their ablilty to modify the game.
Hope this helps.