This can be a pain but I've documented my last build here - http://nooriginalcontent.blogspot.com/2009/01/squeezecenter-upgrade-to-version-74.html
Have a look at that and my post to the slimserver forum (link in the above post) and see how you get on. You will need to run through the pre-install things like setting up your mysql server logins and whatnot but I haven't had to mess about with that since I installed it originally. -- This message posted from opensolaris.org