Hello MacRumors fellas! I hope everyone is doing great I am trying to revive 2007 white Mac with Snow Leopard by resetting the OS X completely, and yes, I know my Mac is very old... It's going to be a tough journey, and I would really appreciate some help. So far, I got an external hard drive and partitioned it; I used one part of it as Time Machine, and another part of it as file storage. I backed up my entire Mac using Time Machine, and moved important files that I want ASAP once I restore my Mac. Then I ran into this problem -- what do I do with certain applications like Microsoft Office (I have 2008 version...haha) and Photoshop that require product key and/or CD? So I was wondering if... 1) I can either partially reset my Mac and save some applications, 2) Save these applications and re-install them after reset, 3) re-downloading from App Store is possible? Or if there is really anything else I can do, please share your wisdom with me! I would really appreciate it Ya all take care!