DREAMCAST(I NEED A TUTORIAL HERE)

Hi people,i have a CD it's an ISO burned in a CD,i have bought it at a store.

Now i have downloaded and configured well Dreamcast,i am in the screen where it shows,Dreamcast Controller,Play Music,Play File,(the bios has loaded correctly since i am at this screen),i just put in MY CD which is readable from my CD ROM the game is named 18 WHEELER, still the emu doesn't detect it,i have configured CD-ROM with my letter E which is my letter of CD ROM,still this emu doesn't work?

Is this because the CHANKAST doesn't support this game or what ?

Many thanks in advance,hey if someone tell me a step by step procedure,it would be greatly appreciated,For E.X 1) do this 2) do this and so on.

Thanks a lot for your answers.

Some games require that you insert a boot CD. Try looking for it in google, torrents, P2P, etc. They're usually so small, like around 30-50 MB.

Which word should i type in google,if it's not ilegall to ask???