The earlier answers to your questions are all valid. However, I
think I may have the solution you are looking for.
Have you tried using the Nikon Vew software? Not Nikon Capture,
but Nikon View. You can download a free copy from
http://nikonusa.com/template.php?goingto=dtc_home Be sure to
download and install both the NV 6.2.1 full version AS WELL AS the
NV 6.2.2 updater.
After you have installed the software, open a picture that you want
to convert to sepia. One the right side of the screen, you should
see Tool Palette 1 with several tabs (general adjustments, red eye
correction, color balance and RAW adjustments). Click on the
general adjustmets tab (if it isn't already expanded), and you will
see four options (auto contrast, sharpening, effect and image
size). Next, click on the effect drop down box and your options
are none, black and white, or sepia. Click on sepia and it will
convert your image automatically. How simple is that?
Here is a link to your picture, converted to sepia using the above
technique
http://public.fotki.com/glennd/d70_images/sepia_test.html
You may also want to try out the PS suggestion as well, because it
will give you much more control over the conversion process. But
if you're just looking for a one click solution, give Nikon View a
try!
Good luck and let us know which method you prefer.
Regards,
--
Glenn Dortch
'Do unto others as you would have them do unto you'
http://public.fotki.com/glennd/
http://www.pbase.com/glennd