I have a similar problem with an Intel v.92 56K PCI hardware modem on COM4/tty3, trying to set up kppp under Knoppix 3.7 (RELEASE 2004-12-08). Whatever I do, the response is invariably 'modem busy'. Has anybody out there any fixes for this one? The modem works quite happily with hard disk-based Mandrake Linux 9.2