This driver was taken from Compaq Website (used in Compaq Presario 7470). It is for a PC TELL Modem with PCT789T-C chipset. Download, Save to temp file, save to floppy disc and open (or open from temp file) and follow on screen prompts. It will unzip to drive "C". Restart when prompted.
When computer restarts, go to device manager, click on the pci communication device, click on properties, and update driver.