There is no mouse or X windows config on the SPARC. The 8 bit server is installed by default. If you want to use the 24 bit server (for TCX cards), you need to install the Xsun24 rpm. If you only have a bwtwo framebuffer and want to increase performance, install the XsunMono RPM. Installing both of the above require you to restart X windows. Also, you can uninstall Xsun if you use one of the above servers.