9.1 and Speedtouch usb modem (stingray type)

Has anyone had any success with the usb speedtouch modem on 9.1. After much googling and tearing of hair, it is as elusive as ever. I have had it successfully working on 8.1 with the user mode drivers, and on 8.2 with the kernel mode driver. But trying the same setup procedures with 9.1 has resulted in failure. I have also tried the speedtouchconf utility, again no joy. Thanks in advance Steve