1. Install DFX, obviously...
2. Exit the application
3. Start the keygen and press 'generate'
4. Go to start -> run and paste this without the quotes "%ALLUSERSPROFILE%Application DataDFX23"
or manually go to "C:Documents and SettingsAll UsersApplication DataDFX23"
5. Copy the REGISTRATION folder
6. Go to start -> run and paste this without the quotes "%HOMEPATH%Local SettingsApplication DataDFX23"
or manually go to "C:Documents and SettingsUSERNAMELocal SettingsApplication DataDFX23"
7. Paste the REGISTRATION folder there
8. Enjoy :)