ok being another newb in these forums and assuming that you dont know theres a search bar:
find a decent road frame (steel)
make sure the back dropouts (where the wheel axel goes) is horizontal.
strip off all the derailers and crap
i would suggest just finding a place selling complete moderately priced track wheels since it seems you dont know too much about this stuff and have a shop install the cog/lockring
put it in yr house next to yr bookshelf and talk about the "zen" of riding or whatever and always bring up your fixie in casual conversation.
blah