Post 2000 plates were basically the European 12 stars with the Spanish 'E' on blue background with
four numbers and three letters i.e.1234 ABC. The only letters not in use are A,E,I,O U and Ñ.
After that anything basically goes.
Check out the examples from the plates I have provided.
Enjoy.
To install just copy and paste the two .dds files (Plate_D.dds and Plate_NM.dds) into your particular skin in the Skin folder of your car.