RAR ?

[mfddan]

I download MODs and I get a *.RAR file. What do I do with it? How do I get those to work in the game?

[Deep6]

they are compressed files containing all files required to mod your game, search Google for WINRAR to download and install a program to uncompress the files

[jimbob]

7-zip (http://www.7-zip.org/)

[switch.dota]

WinRAR (http://www.rarlabs.com/download.htm)

[Boris]

Haha, I would have understood not knowing what a .7z file is, but rar? Rar has been around for ages and seems to be more common than zip these days.

But then I've grown up with computers...