This pc I am on is running xp but I want to install mac os. Do I need to reformat the drive? I built this with parts people say will work nice for building a mac. My parts are
Gigabyte ep45-ud3p mobo with 4 gig of ddr2 1066
nvidia gt220 1 gig video card
seagate 1.5 terabyte hdd
intel duo core 2 2.93 ghz 3mb cache
light on dvd & cd rw

Will I need to loose all my xp stuff and start fresh? I have seen youtube video's and people have hack cd's. I have access to a full non hacked version of the newest snow leopard dvd. Do I still need this Grub.iso driver? What settings do I need to change or do to my bios. Thanks