The trainers will always try to reach the internet first, even if an offline key is present. It will only look for the key if it cannot get a connection.
Then something is blocking the trainer from reading the key (like AV, Vista permissions, etc) or the key doesn't match your hardware+trainer_ID.
This is just this message: This trainer must be authenticated before it can be use. Please connect this computer to the internet or obtain an offline key from cheathappens.com then re-run the trainer".
I have the offline key but I don't know where I must put it
All times are (GMT -06:00) Central Time (US & Canada). Current time is 10:03:05 AM