steam question????

can i use the cd key on the dvd version of a game to "activate a product on steam"

any game

Any game? No.

These games? Yes.

You can also choose to "Add a non-Steam game", which adds a shortcut to the game on your Steam list and adds the option to use the in-game Steam overlay.

WHAT IS A CD KEY AND WHERE CAN I FIND IT?

The CD Key is a serial number with a combination of 13, 18, or 25 letters and numbers - it can be found on a sticker inside your game's case or printed on the game's quick reference card.

The CD Key acts as your proof of purchase for the game - Steam Support may ask for it if you need to establish your ownership of an account. It is recommended that you keep your CD Key in a safe place to ensure the security of your account.

WHICH RETAIL CD KEYS ARE ACCEPTED ON STEAM?

All retail Valve games and a number of third-party games can be registered to your Steam account. All of the following games can be registered through Steam:

• Valve CD Keys in this format:####-#####-####
• Valve CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• AI War CD Keys in various formats
• Aliensvs. Predator (2010 Release)CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Alpha Prime CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Audiosurf CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Call of Duty: Modern Warfare 2CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Call of Duty 4: Modern Warfare is not accepted on Steam
• Cricket Revolution CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Dark Messiah CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Dawn of War Soulstorm CD Keys in this format:1AB2-3FGH-456I-K8LM-OP9Q
• Dawn of War II CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Defense Grid CD Keys in this format (Direct2Drive only):1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Empire: Total War CD Keys in this format:1AB2C-DDEFGH3-IJK4L-MNOPQ-RST56
• F.E.A.R. 2: Project OriginCD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Football Manager 2009 CD Keys in this format:1AB2CD3FGH456I7JK8LMNOP9Q
• Football Manager 2010 CD Keys in this format:1AB2CD3FGH456I7JK8LMNOP9Q
• GTI Racing CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• GTR Evolution CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Just Cause 2 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
  • Note:Please input all O's and 0's as Q's for Just Cause 2
• Killing Floor CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• King Arthur - The Role-playing Wargame CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• The Last RemnantCD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Lost Planet: Extreme Condition CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Lost Planet: Colonies Edition CD Keysare not accepted on Steam
• Metro 2033 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• MLB Front OfficeManagerCD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Mount & Blade CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Mount & Blade: Warband CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• NBA2K9 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Napoleon: Total War CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Order of War CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Prey CD Keys in this format:AAB1BB2C345CDD6E E7
• RACE - the WTCC Game CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• RACE 07 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Ragdoll Kung Fu CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Railworks CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Red Orchestra CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Rogue WarriorCD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• SiN Episodes: Emergence CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Saint's Row 2 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Serious Sam HD CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Shattered Horizon CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• The Ship CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Silent Hill Homecoming CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Space Trader CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Speedball 2 - Tournament in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Star Trek: D-A-CCD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• STCC - The Game CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Supreme Commander 2 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Unreal Tournament 3 CD Keys in this format:1AB2-3FGH-456I-K8LM
• Velvet Assassin CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• Worldwide Soccer Manager 2009 CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q
• X3: Terran Conflict CD Keys in this format:1ABC-D3FG-4567-JK8L
• Zeno Clash CD Keys in this format:1AB2C-D3FGH-456I7-JK8LM-NOP9Q

Opposing Force CD-keys cannot be registered through Steam. Opposing Force was included in a retail Half-Life package. The Half-Life CD-key included in the package will unlock all of the games in that package, including Opposing Force.

Note:Only the retail third-party games listed above can be registered through Steam. No other third-party games can be registered and downloaded using Steam.

alright thanks!!!

reason i asked is because I have far cry in 5 cd's and i don't want to bother with cd's , rather just download through steam

also is just nice to know.