There are literally books and complete websites on color management.
Even the experts don't agree on the best methods and tools. Also, even
assuming your printer is working as it should be, there can be
variations between the units, even when using manufacturer's papers,
inks and profiles.
More of a problem is the cryptic nature of the instructions the printer
manufacturer's and other software products provide. One of the big
problems a couple of us have been in discussions with several in this
business is the lack of agreement in the use of terms, the nature of the
interfaces and the problem of double color management. What I mean by
this is that since there are no solid tools within the OS (on the
Windows side of things) each manufacturer has attempted to find their
own solution to color management. The problem is they often step on
each other's toes. So, the minimal OS controls, the printer driver
controls, the image processing software controls, the video card
software and driver controls, the scanner or camera color management
controls, and so on, each have their own methods to try to help
calibrate the monitor to print results. It often makes a mess of
things, and the confusion for the average user can be quite substantial.
If the OS had established protocols and rules earlier, they would have
been ingrained and integrated, as it is with the Mac OS. To this day,
MS is still trying to develop a set of protocols that will be accepted
throughout the industry. It gets progressively better with each OS
release, and some tools are manifesting in Vista, for instance, that may
be brought into the foreground as they evolve which may resolve this to
a greater extent, if the rest of the industry can agree to allowing the
OS handle this.
Time will tell, but in the meantime, there are some things an individual
can do. Make sure your printer is working correctly. Many times off
color prints, especially suddenly, as the result of a clogged head or
wrong ink or paper in use.
Figure out which software you are allowing to handle color management,
so it doesn't get double color managed. Many use Adobe Photoshop and
Adobe Gamma to accomplish this, some use the printer drivers, some use
scanner or camera conversion software, and yet others use a separate
product/calibration tool set.
Art