No install cd

Go here and select your OS and download:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=351&modelid=9455

(You may have to wait a little for the entire page to load )

Hope that helps! Should you have any further questions, please feel free to post them here.

P.S. – I would greatly appreciate a FixYa! rating if the solution I provided fixed or helped you fix your problem.

Thank you for using FIXYA!

Cheers!
IrishDruid

If you do not have the disk you must download the software from Internet, follow instructions below,

Click here:Official Canon Drivers and Software

A web page will open, follow instructions, select model, select operative system etc., and click on download .
Chose to download the file in my documents when asked.
After downloading, find thefile,doubleclick on the file, if you get introubles,then follow the instructions below to reset and reinstall:

• Unplug USB.
• Download driver from website and run the file.
  
• Follow driver installation wizard.
• Plug back printer when prompted from installation wizard.

Note:some device does not work on Vista