true type fonts

i am creating images using true type fonts. i have uploaded all my fonts into one directory on the server(/fonts) some fonts like arial.ttf work. however other show up as boxes. they are beautiful but not quit the desired effect. what is the problem any idea? it cant be a scriptproblem can it? it has to be the files or maybe server set up? i have done this before with no problem so i am stumped at what the difference here is and why some work. idea? Thank You, Jon Yaggie www.design-monster.com And they were singing . . . '100 little bugs in the code 100 bugs in the code fix one bug, compile it again 101 little bugs in the code 101 little bugs in the code . . .' And it continued until they reached 0