How do you add animals to zoo tycoon i also have the dinosaur digs expansion pack

If you have the installer downloaded then you just open it, select the Folder where you installed zoo tycoon (2) and done...

or if you have .z2f file then just copy them into the folder where you installed zoo tycoon (2)

and can you please tell me how i can get Dinosaur Digs expansion pack for free... (not demo...)... if its not free, please upload it somewhere and just send link to [email protected]....