Printing with Mapmode MM_LOMETRIC?

I have to print to specific locations on a paper.
Like at x=82mm and y=189 mm print a textline or image.
I'm getting a bit confused by the SetMapMode etc. functions, and I'm not
really sure what's the best way to do this.

Should I use the default mapping mode and just calculate the locations based
on the pixels and dpi?
Or would it be better to use a different mapping mode and just ?

Is there any good example code available ?

|| Bjorn K. Nilssen      //