phone restarts it self after changing the font

i have changed the fonts of my w610 and i think that the font is not suitable for it but i have applied the font which is available here in download area.
Should i put the files like fonts.xml and layout.xml too and where?????
help pls
And i am using xs++ for uploading the fonts is it good?

you need to put fonts.xml too inside the fonts folder but not layout.xml

in the same folder right?

yes in the same folder

yeah thats right