Random Vehical Spawns on Mission Start [HELP]

[PirateGaming 10]

I've been making a MP armory for me and some friends and i may even post the mission on here because I havent really found any other missions like it. Thats not the point, im looking for a script that will spawn random vehicals in given places at the start of the round. I'm basically trying to get the same effect that the default A2 Armory has going on with random spawns. If you're going to post a wall of text please let me know what to do with it and how to use it because i am NEW, to mission making/editing. Dont just say "Oh here's the script" and leave a massive and insane chunk of wording and expect me to know what to do. Been searching around for a while and haven't found anything of use to me so i would really appreciate it is anybody could give me some input :)

[Psycho5553 1]

You have an module in arma 2 that is called ''Civillian cars'' Or something... Just place that somewhere on the map and it should spawn cars in all city's on the map