Unzip/Unrar trainer into any directory, then start the trainer with "pztrain.exe", and finally start the game. During gameplay toggle trainer options by pressing the following key combinations:

Hotkey Option
F1 Toggle Get Massive Money
F2 Toggle Get Massive Fanshop Points
F3 Add 1 Homegoal
F4 Add 1 Awaygoal
F5 Sub 1 Homegoal
F6 Sub 1 Awaygoal

Trainer notes:

Get Massive Money:
Go to Carreer Mode, activate the option, go to any other screen and go back again to see the effect.

Get Massive Fanshop Points:
Go to MY FIFA 06 and activate the option. Then go to Fanshop and buy anything you can afford. Go back to MY FIFA 06 and enter the Fanshop screen again.

Goal Options:
Press key at any time in a match. But note that you won't see the changing in the graphics immediately.. Though if you press ESC after using an option to go into the game menu, you can see the changes by entering the match facts screen.