FBSD On Mac Desktop Pro

[M. P.]

Hello I have Mac Pro desktop and want to install FBSD on it. I believe it is new enough for the AMD 64 install. What is the best way to get FBSD on my system. I have had difficulty getting the image file on a usb stick. Any solid tutorials someone know about? 
	As far as a cd rom install what size of cd rom should I use?
Is their a current prepackaged FBSD That would work?