would you mind telling me what I'd have to do to use this font for the lockscreen clock

I used the css template from page 1 to change the clock style and positioning....

where does the font file go and what do I change in the css file?

I have a mac....

edit: found HelveticaNeue.dfont on my mac...
edit:2 extracted ttf files from dfont file...
edit:3 copied to N9 and updated font cache...