How do you Change dino skins in JPOG

on the computer versioin you download the skin you want as a zip file. then you open it with winrar or winzip. once you have it opened, extract the files to C:\Program Files (x86)\Universal Interactive\Blue Tongue Software\Jurassic Park Operation Genesis\JPOG\Data\matlibs if extracting them wont work copy and paste them in the file you are suppose to extract them to