I frankly do not know your OKI color laser printer. I have a Minolta color
laser printer and there is no software with mine to specifically print
photos, I can just set the preferences I want for printing, when printing
after opening a software to edit photos and using the print command from
there or simply using the XP Wizard.
If your printer comes with software to open photos and then print them, you
should simply start the software, open the photos you want to print and then
print with the options you have. However, I doubt very much that your
printer came with such software.
You stated "the printer....and does not trim the photos". Well, how do you
know that it does not trim the photos? If this is correct, then you must
know how to use the software that came with it and does not trim photos. No?
So, you must know how to print without trimming and overriding the XP
wizard. No?
I am just guessing. You are printing photos from a digital camera and the
top and bottom are trimmed out and this is annoying to you. If this is the
problem you are having, welcome to the club. It has nothing to do with the
XP wizard or your printer. If this is the problem, let me know and help will
be on the way, but also answer the two questions above so I have a better
idea of what your printer is capable of doing.