[trombel]

BSDfan666, I tried your suggestions with no luck. The same errors do appear. I know that the error "DRI ins't enabled" is not important. Anyway, I just can get my video card to work.
I can get, after an X -configure and a Xorg -config xorg.conf.new, a fine X screen.
But when I copy this file to /etc/X11/xorg.conf and try with the commnad X ( I type X because when I type startx the system says : Command not found ( I don't know why), I cannot get a valid screen configuration. I will keep trying anyway. Thanks for your help.