[CoD 4]Call of Duty 4 - Installing a new map
Click the link below to learn more about the topic in this thread:
https://ccm.net/faq/3175-cod-4-call-of-duty-4-installing-a-new-map
https://ccm.net/faq/3175-cod-4-call-of-duty-4-installing-a-new-map