Counter-Strike Source VALID CD KEY: This method is good if you have two computers, and want to play online on both at the same time, this will give you two CD KEYS, so you can share with a friend or whatnot. This method will make a *NON USED* CS Source or 1.6 cd-key from any other WORKING CD key for Counter-Strike This method WORKS, and the resulting key will be a free, unused CS Cd key! Don't e-mail me saying it doesn't work if you aren't using the BOX version! It MUST be from the back of a OFFICIAL CS CD CASE If you honestly used the CS cd CASE cd key, and have a problem with the new key, e-mail me at with the CD-KEY you CREATED using this method, I'll find the problem with your key for you, under NO circumstances should you give your CS CD key to ANYONE! Instructions: 1)Write down your BOX-CD KEY on notepad, or another similar typing program. (INCLUDE THE DASHES) 1)On the 5th number, add 1 (one) to the number, if it turns to 10, make it a zero 2)On the 7th number, minus the...