This Driver works well on all WinXPs. It is for "ECOM EM56 CAT Data Fax Voice V9.0 Modem. Create a folder to download the file to. Download the file into the newly created folder. Unzip it. When 'New Hardware Found" is displayed, point to the folder and complete installation. You will of course get a WinXP warning that the driver is not signed, ignore it & continue installation. I have got Win95, Win98 WinME & Win2000 drivers for the same modem. Contact me for any assistance.