well i've been dying to find some mod or something like that. like most of us. and i found out about the russian project FOnline: 2238 which is exactly that. only it's a more harsh wasteland due to other players encounters(savages, i tell ye!)
you start off by shovelling brahmin shit and ...well, better find out for yourself. who wants to find out more or give it a go, check the forums
http://fonline2238.net/forum/index.php