I found a link to http://www.pla.net.py/home/oliver/3com.html which told me to: "setserial /dev/ttyS? irq# portI/OADDRESS ^fourport ^auto_irq skip_test autoconfig spd_vhi " which gave the response : "Cannot set serial info: Address already in use." How do I free the address? I have a US Robotics V92 I am running knoppix from the HD Am I on the right track?