[Serusers] CVS error

Hi, according to the description on the site http://developer.berlios.de/docman/display_doc.php?docid=32&group_id=2 I have tried the CVS. Unfortunately it doesn't work with me: bash-2.03# cvs -d:pserver:anonymous@cvs.ser.berlios.de/cvsroot/ser co auth cvs server: cannot find module `auth' - ignored cvs [checkout aborted]: cannot expand modules When I input the whole directory like: bash-2.03# cvs -d:pserver:anonymous@cvs.ser.berlios.de/cvsroot/ser/sip_router/modules co auth then I get an erro: cvs checkout: authorization failed: server cvs.ser.berlios.de rejected access to /cvsroot/ser/sip_router/modules for user anonymous cvs checkout: used empty password; try "cvs login" with a real password What is wrong? Thanks Yang