http://adf.ly/673885/http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.6.4-RECOMMENDED/forge-1.6.4-RECOMMENDED-installer.jar
run the installer
you need to run 1.6.4 minecraft first
download http://adf.ly/673885/http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.6.4-9.11.1.953/forge-1.6.4-9.11.1.953-installer.jar
and run the installer
place Dragon Mounts version 1.6.4 in the mods folder
.minecraft\mods
Not really, because the current setup doesn't allow mods to be hotloaded.
yes it can
CodeChickenCore will automatically download a dependancy, CodeChickenLib, into your mods folder.