screen25,
Please read the first response one more time.
Sun Ultra 45 workstaions require Solaris 10 or newer.
It must be the January '06 release or newer.
Even the first, March '05, release of Solaris 10 is too old for the Ultra 45 hardware.
http://sunsolve.sun.com/handbook_pub/Systems/Ultra45/Ultra45.html
This OS requirement is what the HARDWARE needs.
Install your application.
It should work.
If it doesn't, then go back to the application vendor and buy a version that does work under Solaris 10.