YAST2 Online Update (When is a subscription required?)

Hi I recently received and installed the Linux Technical Resource Kit from Novell. I installed SLES 8 (/w United Linux 1.0) My question is, am I able to take advantage of SuSe's YAST2 Online Update services to install patches, software, or system upgrades? I have read what I could find and I believe that I am not able to update SLES 8 components because I am using an evaluation version of the software, but what about United Linux 1.0 or the SuSe client software that is not part of SLES. Can these be updated online or do I have to purchase some kind of support license? I want to install Oracle 10g and want to make sure my system is up-to-date. Thanks and take care, JazzPup