you should get fallout mod manager project Nevada is a FOMOD and wont install properly with nexus mod manager also fallout mod manager or FOMM for short has a bunch of tools such as BOSS auto sort used for sorting your load list and ensuring your game runs smoothly TESsnip for creating esp's and esm and also used for porting mods from FO3 to new vegas and vise versa and conflict detector which will tell you if one of your mods is a master to another and which should be loaded first NMM has none of these