Solaris 10 is going to be fun. I'm doing that myself now after having worked extensively with Amanda in Solaris 9 over the past couple of years. As a general approach, I find the Quick Start off the zmanda wiki users documentation to be the best place to start. From there click out to other pages on the wiki as necessary to dig for specific details.
http://wiki.zmanda.com/index.php/Quick_start
For Solaris 10, one of the main differences is going to be setting up inetd services. What I did was to set up the amanda udp service on 10080 in /etc/services just as on Solaris 9. Then I set up the entry for amanda in /etc/inetd.conf. Then I ran inetconv. That converted the entry into the xml based setup that Solaris 10 uses. After that, any further changes have to be made with inetadm, but it gets things jumpstarted.
I haven't completed the whole setup yet. I need to get my ssh keys set up and then run a backup and try a recovery.
If you come up with specific questions, ask them. It's not clear whether you're talking about amanda.conf or about Solaris 10 services or what. Jlliagre knows 10 pretty well, I gather; and I'm working through Amanda on 10 now. Zmanda has also put out a package install for 10, but I prefer to build things myself. I'm using gccfss on a T5220 with the cryptographic accelerators.
