system administration without yast

Hi all, I am running SuSE 7.2 with brltty 2.99.5, and have noticed that yast and yast2 are not acccessible. Is there a way to do system administration of the system without these tools? I know that on red-hat adduser can be used to add a new user, but that seems to be missing from SuSE. Any help would be appreciated. I am a real newbie at SuSE, in fact only had it since Friday, and can't get it installed on another pc.