JustinMTA

You need to find a way to save it to .3DS or another file type that zModeler or 3DS recognizes, because those both have the ability to export .DFF .DFF is what MTA uses to load the 3D models.

You're looking to work with a shader or a vehicle body mod?

I can help

It's up to the servers you play to provide that option for you.

After the first time client joins a server, files are downloaded to the clients hard drive until you edit them again.. Or you could just create your own launcher or installer in VB.Net or another language to permanently or temporarily replace/install files until the application closes again.. Idk what you're asking seems kind of useless considering the options MTA has in place already for mod loading.