After a little research on modding a G5 Case to house a PC motherboard, I have decided that it’s too much of a hassel for little reward. I purchased this case about a month ago for $104 including shipping in hopes of modding the case. I searched all over the web and found a few good links for instructions on how to install a PC motherboard and power supply.
My Ebay Listing

http://www.overclockers.com/tips1133/index02.asp
http://www.flexbeta.net/forums/lofiversion/index.php/t5741.html
http://www.macmod.com/content/view/361/1/
http://www.neowin.net/forum/lofiversion/index.php/t393678.html
http://hardforum.com/showthread.php?t=943998&highlight=apple
http://forums.bit-tech.net/showthread.php?t=99239
http://www.hardforum.com/showthread.php?t=927918?
http://www.i-hacked.com/content/view/202/42/

Although I am still tempted to keep the case and mod it for the “brag” factor, I feel that the feat is not worth the cost and/or the bragging rights. Also I feel that I have better things to invest my time and money into. Say for example my home, and oh yeah weapons/guns.