The Motherboard on my dad's computer busted so I need to replace a few things, plus a few upgrades if I can fit within the budget.
Can reuse pretty much everything. I think the CPU is a 1366 socket so it'd be easier to get a new CPU with the new motherboard. He wants to get another HDD and graphics card if we can but they're optional. PSU is 400W and RAM is 3x2GB, he doesn't do much intensive and worked on an ancient machine for ages so low-specs are fine. I was gonna get it through PC Case Gear as that's where I got the parts for mine, if there's any other Aussie retailers around Melbourne then that works too.
For CPU I was thinking of an i5 3450, just because it's in the right price range. I don't know shit about Motherboards so any suggestions there would be helpful. A Western Digital Green 2Tb for the extra HDD, just about anything is better than what he has now for the graphics card.