i found a thread from last year where someone had the same problem as i am now. when i try and activate ttw optional files after activating main files just fine it says "TTW FOMOD must be installed first." I saw a fix to download a fomm.exe and replace the fomm.exe already there. however this didn't allow it to work as opposed to the suggestors situation. any other tricks would be appreciated and i hope i will be able to play tomorrow, as im sure i wont be dissapointed.
if it matters i am attempting to try ttw because my disc goty of fo3 is asking for disc and i haven't had to use the disc in for ever.