I think you need the desktop-devel package. Try this:
urpmi kernel-desktop-devel-2.6.17.13mdv
BTW, if you want to setup urpmi to allow you to fetch stuff directly off the internet, here's a little script I setup to do that for me the way I like it. You'll have to correct the SITE variable for your Mandriva version in addition to the MIRROR variable.
Code:
#!/bin/sh
# This sets the sources of urpmi. Go to these sites to find a mirror
# site and then edit the MIRROR variable below.
#
# http://mandriva.com/en/download/
# http://easyurpmi.zarb.org/
MIRROR=http://EDIT-ME.com/pub/mandrake
SITE=$MIRROR/official/2008.0/i586/media
LIST=media_info/hdlist.cz
urpmi.addmedia main $SITE/main/release with $LIST
urpmi.addmedia --update main_updates $SITE/main/updates with $LIST
urpmi.addmedia contrib $SITE/contrib/release with $LIST
urpmi.addmedia --update contrib_updates $SITE/contrib/updates with $LIST
urpmi.addmedia non-free $SITE/non-free/release with $LIST
urpmi.addmedia --update non-free_updates $SITE/non-free/updates with $LIST