How Many Versions of Windows 7

Just a queastion about the ISO's in this link: Windows Vista Direct Download Links Are these OEM windows versions? I need OEM. Alle of the windows versions are OEM? And if how can I find myself the right language? Can someone explain how to do it? I don't even know where these numbers...

I just got a small 8" netbook that has the 1.6ghz atom CPU and 1gb ram, it had XP on it but its corupt so i want to put win7 on it but i know win 7 wants 2gb or more ram to run good,,, is Windows Starter going to be lighter than home or ultimate? It has 160gb HDD so size/space doesnt matter any

Read more at: link I think 10 versions is a bit over the top now Microsoft.

I'm going to be distributing a copy of a hiking guide and I'd like to keep it as simple as possible. Do all of the most used versions of Windows have a unzip utility?

Through my university's engineering program I am able to get Windows 7 enterprise for free in the 32 bit and 64 bit versions. I want to be able to install the 32 bit version on my laptop and the 64 bit version on my desktop. However, both versions have the same product key. Will I be able to...