If you're confused on this, you won't know how to use the keygen program. From what I've seen,
, the key requires you to run notepad/whatever editor you like as Administrator and modify your hosts file to prevent CS6 from communicating to it's home base. If you don't do this, your key will automatically become disable.
In addition, the key generate a unique fingerprint. Therefore, you will need to be online with someone for that person to generate you the key or you do it yourself. Many people have failed because they miss one step and give up in frustration.
It's not like the old days where you generate a key and anyone can use the key.
If you need Phototshop, I say just use Gimp. It's free and it works and can probably do everything, or almost everything PS can do.