I have currently 2 x Samsungs 250 GB in RAID 0 i have some money, and was wondering if i could add say a 74 Gb Western Digital Raptor, would it fit in my case?
You should have plenty room.Unless its not a custom case.Some factory cases might not have enough room to suport another.But you already have plent of space.Why do you want to add more?
Looking at your specs it dosent seem like you really need anything else for your comp.Something you could get though is a psp,and if you have money left over then get a 1g card to go with it.Psp's are so awesome.