I think there is somewhere solution for this, but i couldn't find the right words or just being lax in search, but...
I got my map in near of decorating and the stuff, but then i need separate texture jpg's. I tried to made some of my .pk3's to zip, then pick and copy the textures. And there is the problem.
I tried to make them (pk3) to zip, but i don't have way to do it. I know that pk3
IS zip, and then i'll have to make it to pk3 to make it playable.
And i'm using fuckin asshole Windows, and it's not my property.

(even as i got free reign to use and the stuff, but not to change system, because some rely completely on Windows, unfortunately.)
So.... links and advices etc. please?