I'm a book keeper, honestly, A/R jobs are the way to get in with small businesses or larger firms. Often you don't even need your degree complete to get them (I would start looking now). My experience was that I started as an A/R clerk and then was moved to A/P and now I do full cycle work.
www.rhi.com (Canadian specific site is:
http://www.roberthalf.ca/) is a temp/placement agency that specializes in office proffessionals and they may be a good place to you to start and get an idea as to what sorts of positions you'd like.