I have the original disk of the Command and Conquer The First Decade...

[pboltink]

I have the original disk of the Command and Conquer The First Decade but not installation codes, how could I get my codes?

[Nyerguds]

Contrary to popular belief, you do not own the game by buying the game disk. You only own the game if you have the disk AND the codes.

[Mattf121]

Basicly what Nyerguds said. If you don'tr have the codes then with the exceptions of the first two games (C&C and Red Alert), you will be unable to play the games on the disk.

[Nyerguds]

Even those won't install without the TFD main serial, I think.

[Revanchist]

The codes should be on the back of your First Decade manual.

Without that, I suppose you'll have to buy a new copy. Bummer, dude.