hi.. i need help

hey i need help.. as u can see in my last post i was talking about where to get small fonts.. well i went to this site:

http://www.dsg4.com/04/extra/bitmap/

and downloaded the right fonts for my computer but then when i went to put them into the fonts folder.. it said it was a invalid font.. anyone have any ideas what i should do? i would grately appreciate! :) thanks