You're such a f'n noob, Mascot
Windows built-in zip program? That's for old ladies. Cool kids for the past 20 years have been using WinRAR first, and now
7-Zip. It's a lot more powerful, and can do such things as right click, "extract to GTR2 folder" which automatically takes care of putting everything where it needs to go.
90% of the time, that's all that's expected from the user. If it's a really small mod or whatever, then maybe it hasn't been packed like that, and you'll have to do it by hand.
I tease, but we'll be more than happy to help you out.