You'll have to load the modem drivers to get it recognised. The drivers will be on that Modem CD you have. Insert the CD and right click on your CD-ROM icon in "My Computer", choose "Explore" and the contents of the CD will appear. Look for a folder, possibly, called Drivers, or Modem or something similar. When the Modem is detected on bootup, re-insert the CD and point Windows to the folder (on the CD) with the drivers.