You can find the same in SD Installation manuall. i did the install from the cli. i would say it is as easy as windows installation. Plese open the PDF file and serch by Solaris. You will find. let me know if you need any help.
Reg:Service Pack:: It comes with all the SP pack whihc u download. when you extract, you will find one folder for Sun. Make sure you are not extracting to a temp folder.
Service Desk Application Server on Sun Solaris â ¢ Sun Ultra SPARC machine â ¢ Disk space: 80 MB Service Desk Service Pages Web Server â ¢ Memory: 128 MB RAM (256 MB or higher recommended) â ¢ Disk space: 50 MB â ¢ Network connection: TCP/IP, 10 MB/s