Every game CD has a different installation code, which was included on the case or on the instructional booklet.
C&C Tiberian Sun is a Game made by west wood studios in 1999, it is the successor of C&C Tiberian Dawn in 1995.http://en.wikipedia.org/wiki/Tiberian_Sun
The next game released by Westwood after tiberian sun would be redalert 2 its a good game.
If it doesn't differ disk by disk the one would be 054719-744117-361544-1519
build GDI's vehicle repair structure and a helipad.