mount old hard drive

Hi guys, I have been looking around and searching for the past hour and did not see anything. but please forgive me if I missed something.

I had a sparc 10 ultra cpu die on me, I got a replacement server from a very generous guy here, now I am getting around to remounting my old hard drive with all my backup data on it. I have reinstalled Solaris 10/04. and I have now plugged in my old 120 gig ide hdd. not I need to mount it and SAVE the data. thats the important bit. so at this point I have the system running and the old hdd plugged in and the system is running. now I need to mount it so I can access the old hdd.
any help please?