Thank you very much for you reply.
I have checked the file /etc/modules.conf and it is empty.
I have installed the driver from
http://acx100.sourceforge.net/
My problem is that, when I insert the card, the system freezes, and there is no messages in dmesg or in /var/log/messages . I cannot do anything with the card inserted! Furthermore, I inserted today the card, the system froze as usual, I waited for quite a long time and, after removing the card, the Screen and Graphic card settings had corrupted.
Any idea?
Greetings,
David
PS: Until next Thursday I can change the card at the store. Do you know what cards have good support on Linux?