I imagine that if you restart the network installation it will also give you the option to repair. In any event, if it does not, you can abort before making any changes.
You might also want to try visiting http://www.bootdisk.com
and grabbing a Linux bootdisk if you do not have one. As for how to make command-line repairs, I still have not learned this, but undoudtedly there are others here who can direct you. I posted because I saw you had just finished posting, and I thought perhaps you get might want to get going on it now while you are in front of your PC. I am a SuSE newbie myself, so this is a case of the Blind leading the Blind... I'm sorry I cannot be of greater assistance.
Perhaps you can also access the commandline when it loads by hitting ctrl-alt-F4 to run Yast again...