This PCTel AMR driver for Win2000 worked for me fine in XP. Only one I found that did. Install via Device Manager, click on PCI Modem, Click on Update Driver etc. Driver is unsigned. Good Luck I found it on the Cd under Modem>Driver>AMR>SIS635>Win2K - JTDownload Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.