StartUp Manager, or SUM, is a gui tool for changing settings in Grub, Grub2 and Usplash.SUM should work with recent versions of Debian and Debian-based distributions such as Ubuntu.
In KDE4 they have changed the KControlCenter and named it System Settings. I found it to be easy to navigate and very intuitive. Lets start the visual review. The start page looks very similar to KControl of KDE3.