Sorry I should have included the links you can use either smart-urpmi or easy urpmi to configure the mirrors.. I prefer smart-urpmi because you can easily check the status of the mirrors and speed if they take to long to load they may be at their connection limits. I use the script provided as well it saves time rather than entering them one at a time via command line.
Mandriva patched their kernel for JMicron support awhile back. Hope you enjoy it
Don't select the test mirrors btw