K3b in your configuration is now ready to burn CD-R(W)s.
You have to run K3b-Setup first, though, and don't forget to create users (Step 4 or 5 in the wizard, I think) -- oh yes and the drivers should be "generic-mmc". For good measure run then SuSEconfig from a terminal.
The other goodies are for videos, DVDs etc. You can get them later, either from your disks or as download, and integrate them by a new run of K3b-Setup.
Btw. there are a lot of threads on this, try the search function on this site, it's fast and good.