HP Pavilion Desktop xv976 PC - Manual (Page 8)

For other versions of Windows, you will need a driver installation
disk. When Windows identifies the new hardware and asks for a
driver disk, select ‘Cancel’ to terminate the Windows ‘new hardware
installation’ procedure. Windows will stop the installation procedure
and boot normally.
After Windows has finished startup, insert the diskette included with
the modem. From the Start Menu, select ‘Run’ and type
“a:\setup.exe”.
To verify the modem was configured properly, go to the Windows
START button, select the SETTINGS option, then select CONTROL
PANEL. Double-click the MODEMS icon. You should see your new
modem listed in the GENERAL tab of the Modem Properties
window. Next, click on the DIAGNOSTICS tab of the Modem
Properties window. Find your new modem in the list of installed
modems and highlight the port the modem has been assigned to.
Now click on the More Info... button. This will show a window with
information about your modem and your configuration.
Please consult "Section Three: Troubleshooting" if you encounter
any difficulties.