7.2 -> 8 update problem

Hi, Trying to update a 7.2 box to 8, and I am failing at first base. If I select system update in Yast2, although it identifies that the souce medium is SuSE8, it finds no packages to update aftering doing the package 'search'. It does not seam to be reading from the CD during this time. If I reboot the machine with the 7.2 boot disks (did not get any in the 8 box), and select system update, it loads something into RAMDISK and then takes me back to the 'select system update' menu. ???? Phil -- Linux 2.4.4-4GB 1:46pm up 43 min, 1 user, load average: 0.45, 0.24, 0.33