By the way, folks, there's an easy (and cheap) solution if you just can't get your Canon Pixma to work:
Walmart.com sells Canon Pixma printers really cheap. I just got a Canon Pixma MX490, printer/scanner/copier/fax, with automatic document feeder, for $35 at Walmart.com!
The price on that one has gone up a little bit; but there are other Canon Pixma models, some as low as $30.
An added benefit to buying a new printer: if you refill your ink cartridges, you will get a new set of cartridges with your new printer. You can refill them only so many times, so it's good to get a new set every now and then.
In fact, if you buy the super cheap printer, and you somehow mess things up by refilling the cartridges, you haven't lost much, because you didn't pay much for the printer.