Any reason why you d/l'ed that and not the rpm that was made for SuSe?
I believe that is an executable file that self extracts. If I'm not mistaken, it is a graphical installer so I would think you could select it in a Xwindows file manager and say open in terminal. Double clicking may even help. Obviously I don't know, but again my real question runs back to why the specific rpm for your SuSE box wasn't selected.