Here are some steps or something...
Find the PS CS4 Extended Trial...
Find a keygen...
Enter the key into the trial...
Then open your notepad, Go to File> open...
Go to My Computer>Local Disk C:> Windows> System32>Drivers>Etc.>Open "host.txt">
Erase everything with adobe> type 127.0.0.1 activate.adobe.com
There you go, it's locked and you have it