Solaris 10 ADSL USB modem problem

Hi,
I have USB Siemens Santis 100 ADSL modem.I need driver for this modem on Solaris 10.Please help me with some info.Platform is x86.Thanks.

It's not on the SUN HCL

and x86 isn't list on Seimans/Belgacom list

Thanks for info.