I brought three of those WD 300 gig Raptors over at Newegg. I want to set one up just for FSX only cus I am tired for formating and spending two days reinstalling all them flight add-ons...lol. Now I have a main HD that I use for banking and surfing ( W7/64 ). The other HD's either have Vista,XP,Apple OS on them. I been wanting to add a sixth HD and have it dedicated to just FSX. I can format and install the rest of the other drives in a couple of hours but the flight one takes a good while...Mike