Yast2 online update?

Hi, I used Yast2 to do online update . First it retrieves a bunch of list of pkgs, and I've updated some . But whenever I try to do a on line update again again I get the whole bunch of list, eventhough I've updated many pkgs. this takes up a lot of time in a dialup. Is there a way to stop getting the whole bunch of lists. THe other problem is I dont know which one was lately updated. Maybe sometimes I'm doing a same update again and again. Can anyone help me how to sort out the updates. Lately I'm using SuSE7.3 and KDE2.2.2 anbu http://anbu.freeshell.org