In XML is only info about size(i think, im not sure that point) and name of font to specific kind - Bold Italic and Normal...
If you got font made for SE, then just Preview it and see if its Bold, Italic or Normal, and then put its names into XML file, just like it was done before
OR you can change name of fonts, result is same.
For my k800@k810 i got 3 font files, so i can change only 'part' of font :)