I got the same printer recently (got an awesome deal at bestbuy, around $35 USD) and I ran the CD and it added an application called MP Navigator 3.0 (along with some other ones) which is the scanner utility for it. I would recommend running the disk and installing the apps that comes with it. You could also probably find an install for it on Canon's website.
Regards,
JDR
Edit: Whoops, misread MP610 for MP160, which I have. Yours probably has similar software.