Install OpenSUSE
KDE or GNOME Desktop
I would recommend using KDE, as it is the default desktop environment for OpenSUSE. The reason for this is because KDE is the default it's likely that all of the OpenSUSE graphical tools (YaST, Partition Editor ect.) are better tested in the KDE desktop environment.
Installing OpenSUSE 11.3 KDE from the DVD
Download DVD ISO
If you're not sure what version you need, download the 32 bit version as it will work on 64 or 32 bit systems.
Burn the ISO
Initial Boot Screen
Press F3 to Select the Video Mode
Next, highlight Installation and hit the enter key, that should cause the Loading Linux Kernel to pop up.
Select the Language, Keyboard Layout and Agree to the License
After you hit the Next button OpenSUSE will probe your system to see what hardware you're using.
Select New Installation or Update
If OpenSUSE detects an old version you will have an option to upgrade it. Select what you want to do and hit next.
Select your Region and Time Zone in OpenSUSE 11.3 Install DVD
Desktop Selection
Suggested Partitioning
I would recommend partition based as it's simpler.
Create New User
If the password you enter is weak you will get a warning. If the machine you're setting up is critical you may want to use a more secure password.
Installation Settings OpenSUSE 11.3 Install DVD
Review your installation settings and click on the Install button.
Confirm Installation OpenSUSE 11.3 Install DVD