Below on this Wacom page, you will find links for downloading Intuos4 PTK440 driver you need.
A LightPluse LPe11004 driver is an important program for your Wacom laptop or computer, as it promotes correct functioning of your Easyshare Z612 device. Moreover, a driver can promote correct functioning of any other device, e.g., a printer, a scanner or a display card. As a rule, your 573305001 Sp35 unit is already furnished with a CD with the proper Intuos4 PTK440 driver set. If the CD is lost, please take advantage of the 573305001 Sp35 link for Intuos4 PTK440 downloading.