FOR U.S. Robotics 56K Voice INT only (speakerphone, TAD). You DON'T need new drivers! The RapidComm Voice/Fax/Data SOFTWARE included with your U.S. Robotics (Now 3COM) modem doesn't work, and NEVER WILL until you upgrade (patch) version 1.2 to version 1.3.2P, minimum! (Check under "About" to see what version your useless software is.) This is the file you need lack of this file is why so many of you can't fix the bloody modem by upgrading the drivers! Totally uninstall your RapidComm software reinstall it then before you do anything else including configuring your software, install this patch !!