If I have a PDF ebook, How can I convert it to work on iPod?

[C u d d l e S a u c e]

I have a PDF Chapter book. I tried to put it on my 3rd Gen. iPod but it doesn't work. Is it too long? I think I need to compress it but I don't know how?
What format should it be and what do i do?

[Sir Apollo]

http://www.zapptek.com/
try that link it should tell you about the program you need.