Utilities are usually in the driver on a dialog tab or as a discrete utility. Go to Printers and Faxes, right click the printer and choose properties, see if there is a tab for maintenance and check under any advanced buttons. Sometimes the maintenance is tab is visible during printing by checking properties or options.
Otherwise you can look in C:\Program Files for a folder with Canon software and see if any files ending in .exe might be the utility.
This
Steves Digicams - Canon i950 Color Bubble Jet Photo Printer has some screenshots showing a maintenance tab.