There was one minor problem with my Linux-to-Windows printing [1] exercise, it was printing at 75%ish size and cutting off a little bit of the left side of the page. I did a google search for "mpc400 cups" (without the quotes) and quickly discovered that my printer works better with the drivers for the Canon S630, so I went to System–>Administration–>Printing, right clicked on my printer and chose properties, driver tab, and changed the printer type to S630, clicked "Print Test Page" and kablingo, I got a full page quality printout.
I’m Happy 🙂
Samuel