Are you referencing a Solaris based controller? Are you installing support for Solaris as a VUser host? Are you attempting to load test a Solaris Server (and what type of server process - Web - Oracle - ? - ...)
How you install depends mostly upon how your Solaris server is involved in the LoadRunner defined test. The LoadRunner installation Guide contains the setup instructions for a number of UNIX variants (Solaris, HPUX, Solaris, LINUX ). Have the instructions contained in the installation guide proved to be incorrect in your environment? If so, you may want to contact Mercury Support to help address any unique items associated with your Solaris/LoadRunner environment.