how to install true type fonts

[raffy]

Could someone please help me install some true type fonts in Xara Xtreme and 3d6?I downloaded some animal fonts to the desktop,and pasted them into the fonts folder for Xara Xtreme,but can't seem to get them to load from there.Could someone help?Thanks!
I get a message saying that there is no font index for the animal file that's in there.How would I generate one?