Rar

I would like to download some game mods for Oblivion, but they are all RAR files. I have always used Winzip and I am not familiar with this one. When I go to the download page there are several types of RAR compressors with no explanation of what they do. Can someone tell me which one I should be using? I assume it comes with instructions or is it automatic like Winzip? Thanks.

http://www.download.com/WinRAR/3000-2250_4-10530598.html

Winrar 3.6

Thanks. Am having a little trouble extracting, but got there anyway.

WinRAR > WinZip. :)