I just bought an external enclosure and a 120 GB hard drive for some extra space for movies and what not, b/c I have a laptop, so I don't have that much space to begin with...but before I insatll this hard drive into the case, I was wondering what the external drive should be....master or slave? I will only be turning it on when I am wanting to use Ghost and backup my system or backup a movie and save it on there. Isn't the HDD in the laptop the master, and then this one would be the slave...or no? Any help would be great on what I should do about hooking this up...I have never done this before. Thanks!