Driver for 33.6 PCMCIA

My friend was given a PCMCIA 33.6 modem for an old laptop. Unfortunately we have as yet found no driver. The only information on the card is: “PC card”, Part 15 Class B, FTC ID lxlbivfm33656c, P/N:cpdhtirp, 33.6 kcps.

That is every thing written on it. Any help in finding a driver would be appreciated.
Thank you.
Paul Oldenburg= p.oldenburg@verizon.net