From KDE on a EEE PC901 running Xandros, I waned to change the work group
under Samba. The menu option as administrator looked the same as other
systems but there was no 'Save' button to save my selection. Neither was
their a warning if I tried to leave that window and move to another menu
option under Control Center. Is there a any of doing it?

I haven't tried editing the smb.conf file directly mind you.