Hello!
I have finished my first toll for FIFA 2006 Demo.It will help you to import your boots to fifa 2006 demo.
If you have some problems yust post here;)
DOWNLOAD IT (http://www.geocities.com/inas1990/BootInstaller1.zip)

does it works for the full game to?

does it works for the full game to?
no it not works , you yust need to extract it to fifa 2006demo/data directory
i will add a new version that works for fifa2006 full

Does it crash the game or not?

Does it crash the game or not?
no , you yust need to follow the steps