Oh, NMM confused me with the whole ArchiveInvalidation... I do prefer NMM over FOMM though, but I suppose I can switch. Installing mods manually seems pretty easy, i've done one before. Not exactly sure how to make a merged patch but im sure I can learn. I apologize guys, I dont have much experience with modding. That is why I wish to learn more. Thank you for the answers though. EDIT: I just uninstalled FO3. I'll just re do everything, this time with FOMM. I'll be sure to be careful and such. I am using GOTY btw... and I heard people have problems with it. EDIT #2: I'd hate to trouble you... but for additional files such as Mothership Zeta Crew Mod.. If I download the main file, and then the air support file, and I activate them and the air support file asks to over write something... do I say no? Or what...? Also, I did figure out to how make a merged patch. I'll re download FO3 later today, download all my mods, make a merged patch, and see how everything goes.