try checking the network for computer names.
the open a terminal
smbclient -L computername
(from this list, find the printer)
as root
lpadmin -p printername -v smb://computername/printerid
(printername - make it up; how identified on your system
printerid - you get this from the smbclient command)
lpadmin -d printername
after this, i think you can open mandriva control panel and do the rest of the printer configuration