Upgrading to KDE 3.3 using YaST

Hello I have downloaded KDE supplementary packages for my SuSE 9.1, added them as a ¨Source of Installation" in YaST (it recognizes them showing ¨supplementary KDE 3.3 update" as a name of the source), tried to install them through ¨System update¨ and... I am getting ¨Cannot read package data from installation media. Media error? ERROR: No proposal" error message. Has anybody been able to upgrade KDE to 3.3 using YaST? Thanks, Dmitry