Yast is of of course as unfriendly when it comes to error messages as any other Linux program. I tried to start up Apache2 using Yast2 and there were only 3 fields in the configuration wizard to fill in: server name, administrator e-mail and listening port. I filled in as server name "Suse Linux". When Yast2 wanted to do the configuration, the error message was: Error: cannot adjust apache2 service Cool.
In order to install source rpms *.src.rpm you need to rebuild the package (as root): rpmbuild --rebuild package.src.rpm This results in a binary rpm. On Suse 9.2 the newly created binary rpm can be found in /usr/src/packages/RPMS. You can install it as usual: rpm -ivh package.rpm
scpm is something like the Location Manager for Mac OS X. You need to be root to execute most of its commands: /sbin/scpm list Lists all available profiles. /sbin/scpm switch "profilename" Switches to the specified profile. /sbin/scpm add "newprofilename" Adds a new profile based on the present systems settings. The files subject to change are located in /var/lib/scpm/profiles/"profilename"/file and /var/lib/scpm/profiles/"profilename"/service. But you shouldn't modify them manually.