WinRAR
http://www.rarlab.com/download.htm
you can use other programs also to open a rar file
Most decompression programs can handle .RAR's but WinRar works. Google it.
open a .rar by using a program like WinZip or WinRar. Both have free trials.
can't open rar files at all. receive archive error message
You have to use an archiver tool to unpack the rar file. Try B1 Free Archiver.
To open RAR files on a Mac you will need an expander such as RAR Expander software (See links below). You can use free, open source Zipeg program from http://zipeg.com (or see link below) Zipeg opens RAR, ZIP and many other file formats and works on both Macintosh and Windows. It also supports filenames in national alphabets and provides quick pick inside the RAR and ZIP files if they contains pictures or photographs. Zipeg allows users to extract all or individually selected files and folders from archives.
To "unpack" a .rar file you need to install a decompression tool such as WinZip or WinRar. These will let you open .rar files and open the full files with applications that can read those (such as Microsift(TM) Word or OpenOffice for.doc files).
Use a program such as unRarX.
RAR always split into several parts, using winmount to mount one of these parts, then all of parts will be mounted to a virtual disk. Open the virtual disk, you will see all files inside the rar.
The RAR file type is a type of compressed file. The contents of the file can only be accessed by using a decompression program that reads RAR files such as WinRAR. When you open the RAR file with an applicable decompression program you will be given the opportunity to extract its contents similar to a ZIP file.
Open win rar and find your file. Once found extract to your desktop, click it then hit run. :)
A .rar file is not a media file. It is a compressed archive. The archive itself may well contain one or more media files within it, but you must decompress the file to open them. In order to decompress a .rar file, you need a utility like WinRAR to open it.