how do i get .rar files to work?

[tatjanam]

i've been adding tons of mods but only the zt2 files work. how do i get the .rar files to work? im putting them in the same place as the other mods/

[HadToRegister]

Install 7zip, a free program that can unzip EVERYTHING

[Stenonet]

One or more files that have been compressed using WinRAR software are contained in a RAR file. Roshal Archive, the name of a high-quality compressed file (also known as an archive) that may be password-protected, is what the. rar file suffix stands for.