I need help backing up Sims 2

I want to backup my Sims 2 and all my expansion packs for pc, so i can have an extra copy. I heard Alcohol 120% works really well and burns the copy protection, but I can’t figure out how to use it!! Can anyone help please??

Good start would be using the search function (keyword [I]sims[/I]) first as this has been discussed many times and then take a look at the guides here with SafeDisc in the title.