i am sorry in probably being rude, but as i played on TW servers with he exact same WoW i am using here, and with my font files i uploaded, i will have to say:
Yes it can, there is nothing else you need to do except copy over the fonts from the zip file,
and if it doesn't work, you did something wrong.
can't help you without you explaining either VERY detailed step by step what modifications you did (usually the mistake lies in some things you dont think of, so write every little nith, click and detail you did), or a directory listing or screenshot of your explorer window of your WoW folders.
Come and join on Starcraft 2 as well =]