Actually it does not work on all windows. In fact Winxp's FATHER OS (Win2K) doesnt use MSCONFIG. NOT to mention apple or linux. I am not sure what Vista uses.
My aim was to get the writer to understand his question was not specific enough. He needs to mention his OS.
vista also uses msconfig. I know for sure it works on 98, xp and vista, i dont remember if it did on 95. those are the only ones ive used. Im always editing my registry or using msconfig, theyre pretty useful.