In my iPhone app,
I have included two custom fonts and by referring this steps by stackoverflow questions....
How to include and use new fonts in iPhone SDK?
You need to check the font name it may be different then the font file name...try this link
Go to your application build phases and add your font files in copy bundle resources
First find that font in your available fonts list:
NSLog(@"fonts: %@", [UIFont familyNames]);
Then find and input the appropriate name.