My HP Deskjet 712C ran out of ink about 3 months ago, and Im so broke its not funny. A new color cartridge is $49.99 CND, and the black one is the same price. I need to print stuff for school now but dont have $100 + 15% sales tax.(Canada's tax sux) Anyone know how to refill these cartidges? I know some people refill theirs by drilling holes and pluging then later, but that was on difirent types of printers.