How do i scan something with canon mp210. I have lost the set up cd rom. it prints and copies fine, i just can't figure out how to scan

You need to have the proper software installed to be able to scan. If you have installed it, then open the program and run the scan function. If you haven't installed the software, do a Google search for your printer model. Go to the Canon website and search for the drivers and software for your model. The software on your lost CD can be downloaded form Canon. Install the software and follow the instructions.