I am big fan of NX machine clients for long time
Download client from :nxclient-3.5.0-7.sparc
Change your working directory to the location where you saved the package and install it by running from a console:
# sudo gunzip nxclient-3.5.0-7.sparc.gz
# sudo pkgadd -d nxclient-3.5.0-7.sparc
Or login as user and make is su and supply root password and install teh same way without sudo
