createusers and SuSE 7.3

Hi I've been using the excellent createusers from www.lfsp.org to create users and set samba passwords on our Linux box. It does exactly what it says on the tin and all works well. However, the users don't appear in the Yast 2 user administration tool. Is there some SuSE script I need to run to get them into the list, or is there another file somewhere I need to keep up to date with new users? Cheers -- Phil Driscoll