Opening .rar files

[Bruno Wolff III]

On Sat, Oct 27, 2007 at 18:40:13 +0800,
  Wong Kwok-hon <kwokhon at gmail.com> wrote:
> How about to compress to RAR ? Which software can ?

You can buy software from the people that developed the RAR specification.
If you don't want to do that, consider using some other compression format.
gzip and bzip2 are reasonable choices. 7-zip provides a free (both meanings)
tool that will allow windows users to uncompress these formats (in the
event that was the reason you wanted to produce RAR files).

P.S. Don't top post and trim your replies.