Convert book in PDF to Kindle Format

I just published a book with CreateSpace. I have the PDF file for the finished book and it looks great. The book printed fine. I need it converted so the book display well on Kindle. The automatic program Kindle provided did not format correctly. The book is not heavy on graphics, but there are occasional graphic elements. This should be a quick and inexpensive process if you know how to do it. The book is very short, too. 166 printed pages. Cover is already done in JPG format