ok so i copied a mod file into my game direcotry thinking i had bakcups... turns out that i thought wrong. when i first signed up there was an option to download sins if u ever needed to for any reason, i'd like to know how to do i lol as my game disk is lots somewhere in all the other stuff lying around 
other thing is, how do i corretly patch??? through impulse? there isnt a patch tab tho....