For SPARC systems :

pkgadd -d http://opencsw.ma.eurocopter.corp/opencsw/pkgutil-sparc.pkg

Or for x86 systems :

pkgadd -d http://opencsw.ma.eurocopter.corp/opencsw/pkgutil-i386.pkg

Uncomment the file /etc/opt/csw/pkgutil.conf accordingly to connect to the local mirror :

mirror=http://opencsw.ma.eurocopter.corp/opencsw/stable

/opt/csw/bin/pkgutil -U

Now you can install any OpenCSW package. For example, to install vim :

/opt/csw/bin/pkgutil -a vim
/opt/csw/bin/pkgutil -y -i vim
/opt/csw/bin/vim