Hate to be the wet blanket, and I hope it isn't an issue, but better to know now -- As a post 9/11 condition, Canada won't admit those with prior misdemeanors (or felonies) without a song and dance paper trail prior to attempting to cross the border.
In my little state of CT, some speeding charges, for instance, 65 in a 40 MPH zone, is considered a misdemeanor offense.
http://www.independenttraveler.com/resources/article.cfm?AID=729&category=35
