Below on this Canon page, you will find links for downloading PIXMA MP990 driver you need.
A COMP2VGATV2 driver is an important program for your Canon laptop or computer, as it promotes correct functioning of your ScanJet G4010 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 LaserJet M3035 unit is already furnished with a CD with the proper PIXMA MP990 driver set. If the CD is lost, please take advantage of the LaserJet M3035 link for PIXMA MP990 downloading.