A .rar file is a zipped file. To open it, one will need an unzipper programme such as WinRar. Though this claims to be free for only a trial period, this is untrue and will probably never be paid for.
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.
you can use other programs also to open a rar file
You can extract rar files by downloading an extractor like WinRar or 7-zip. You can use WinMount to open a rar file without extraction, because WinMount can mount it to a new virtual disk.
can't open rar files at all. receive archive error message
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.
Adobe Reader is not for opening rar files. It is a compressed file which can contain one or more files. You need a piece of software like WinRar or Winzip to open it. There may be files in it that can then be opened by Adobe Reader.
Most decompression programs can handle .RAR's but WinRar works. Google it.
To unrar a RAR file, you need a file extraction tool that supports RAR format, such as WinRAR, 7-Zip, or UnRAR. Simply install one of these programs, right-click the RAR file, and select the option to extract or unpack the files. You can also open the RAR file with the extraction tool and choose the destination folder for the extracted contents. Once the extraction is complete, you can access the files in the specified location.
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).
Extract the files from the RAR, then create the PUP file from the extracted 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.