How to uninstall using YAST2

I installed something on my Suse 9.1 linux and it changed the password to the mysql and now I can't get in anymore. I have found no way to get in to change it, so I thought I would uninstall and then reinstall to get controll back. Yast says under software that it can be used to install and uninstall. I was not able to find the way to uninstall using YAST. Does anyone know how to do so or how to get into mysql again? TIA Bob