[SuSE Linux] How to upgrade SuSE

Hi, every one! I am running SuSE 5.0 with kernel 2.0.30, now I have troubles to install Oracle 8.05, etc. Could anyone tell me how to upgrade my SuSE? * What packages I need to download (I haven't a CD set of new version SuSE) ? * How to upgrade or install these new(version) packages? * Do I need to build the kernel(new) by myself? * What are the points I will take care, like backup things? Any instruction will be very appreciated. Weiboo - To get out of this list, please send email to majordomo@suse.com with this text in its body: unsubscribe suse-linux-e