How do I EXACTLY replace a vehicle with a custom one?

[supacasey]

Ok, I've heard two things about my globals problem: one, that you have to open up the globals.globals tag (from my map or from the Halo CE tags?) with guerilla and replace some normal mp vehicles with the custom ones I want, and 2: that in sapien when I add a vehicle (such as the wasp) I rename the wasp.vehicle file to warthog_mp.vehicle and that will make it show up. so are these true, and if so how do I do those step by step, and if they're not true, how do I do it? (Feel free to e-mail/PM me)

[Kurroda]

why replace the old ones? just put in the custom ones in sapien.

[Patrickssj6]

why replace the old ones? just put in the custom ones in sapien.

and register them in the globals but you can name the .vehicle file like an existing one so you can have multiples ones yes thats my way