To start off, you gotta launch YaST.
You should see a list of the software sources, with the cd/dvd line at the top.
You should block the cdrom line, and switch on the other two.
Configure Suse to Use Internet Repositories Instead of CD/DVD
If you've installed Suse using the CD/DVD installation, the default setting is for software installations to load from the cdrom instead of off the internet repositories.
