The Server has to install the mods Not You.
A dedicated Minecraft server is a server where you can play original Minecraft. Usually without plugins or mods.
Yup.
Unfortunately there are no jetpacks in Vanilla Minecraft, you'll have to install a mod to get them.
Check out the link below for a guide of how to install mods in Minecraft.
NO!
It might not be out yet but it should be. You have to download and install forge then you can install mods by going to .minecraft/mods and adding a mod there.
Google for Modstallation. You can use that software to install mods.
It is a server that dosn't use mods or plugins
You can if you use mods or server texturepacks
you cant
any will load mods onto minecraft but the better operating system the more mods you can have