I bought Dark Messiah M&M Dvd and after installing it and the patches....it wont read the disk..."Wrong disk inserted, please insert the original dark messiah cd/dvd"...so i tried using the Cd key and activate it on steam, all good, now I'm stuck...it wont read that i loaded the game through the dvd, and it'll take me a week to load it through steam which is a different story....any ideas on how to get this running without steam and the dvd readable? offline game only, thanx

If you run it through Steam the DVD doesn't work anymore.
DARK MESSIAH Installation and Troubleshooting Instructions