The first thing I consider is that people aren't so great. That assumption is usually valid. I mean statistically, half of people are below average. Maybe the first post instructions aren't so great, but maybe it's because they assume a basic competence that apparently a whole lot of people are lacking.
*.7z files open with 7zip. That's not difficult to find out. Cgminer 3.7.2 is freaking ancient by crypto standards, so there's no reason to assume it's pre-compiled with the custom driver written several years later. That's also not difficult to find out.
So, what you do is, you download the proper build from the first post. You get 7Zip and open up the 7z file so you can extract its contents. Then you run that command line from earlier, except you use --gekko-2pac-freq because you're running a 2Pac and I bet it'll work.
I reply sarcastically to noobs not because I'm full of myself, but because I'm a really big fan of self-reliance and I hate when people take the easy way out instead of spending the extra five minutes to solve their own problems, especially when the answers are, for the most part, already collected in the first post.
That said - hey VH, you might want to mention in the first post that 7Zip is required for extracting your Windows pre-builts because not everyone recognizes it.