[kde-linux] Lost system desktop icons on KDE3.1

[AG]

On my wife's KDE3.1 Debian Lenny system, she has lost the home, trash, 
etc.  Instead, she has a couple of ordinary looking directory-type icons 
that are just files she has saved to the desktop.

She is keen to have those icons restored (I don't know when they 
disappeared, only when she told me that it was bugging her), but having 
gone through the available menus, I can't see any option that enables me 
to reset this for her. 

Can anyone help me help her?

TIA

AG