Need help about embed font

I made a flash file which has three buttons and a dynamic textbox in it.
all I want to do is just to make a text’s font changed when click on each button.

I put all font files in the libray and imported them for action scripts and assign TextFormat command to each button.

It work well on my computer but when i tested the movie on another computer It dont work.

the file I made is here.

http://www.geocities.com/little_okun/embedfont.swf

can anybody help me with this problem? thank you very much

ps. I am using Mx 2004.