56RW-V20.ZIP is V2.00, the latest version modem driver and supports Windows 95, Windows 98 and Windows NT4.0.
Also available is a Flash Upgrade, I could not get this to work!
Also works for PCMCIA and External Modems. See URL Above
Get MDMDEL.EXE from this site and delete your modem from Control Panel, run the EXE and then add modem using the new driver.