Finally, no more lost cd-keys, no more worrying about lost disks. Blizzard now stores them all online, and you can download the clients anytime from their website. Just go to
Blizzard accounts, and sign up. Then you can enter the CD-keys from any of the currently supported games, and they are;
StarCraft, StarCraft Battle Chest, StarCraft Anthology, Warcraft III, Warcraft III: The Frozen Throne, Warcraft Battle Chest, Diablo II, Diablo II: Lord of Destruction, and the Diablo II Battle Chest.