Which card did you use?
What gives you
Code:
iwconfig
iwlist scan
ifconfig
lspcidrak -v | grep -i net
(as root).
Regards,
TeaAge
EDIT:
I'm wondering why you register to the ubuntu forum and post an mandriva problem. I know, this is the Mandriva Section of the board here. But you would reach a lot more Mandriva User on forum.mandriva.com