This driver is OK for Win98 and ME, but another driver is needed for Win 2000. This driver supports many of the Elecom tenkey models. For more information, visit www.elecom.co.jp/support/peripheral/drvupd/index.html There is an English version of this website, but it is completely unhelpful (no downloads.) This page will load IN JAPANESE, so it will look like scrambled CIA codes on normal English PCs, but model names are easily deciphered, as they are in ABC's and digits. If you can read Japanese, and want to view this page in Japanese on an English PC, I recommend www.njstar.com 's "NJStar Communicator" (shareware). If you need help reading the Japanese, feel free to E-mail me, and YOU MUST INCLUDE include "NOT SPAM" in the subject line.