Buying parts for cheap build.

Well the motherboard from ebay is coming and I am excited for it. I cant wait to get the other parts for the system. Like I said before I will get memory from Crucial.com. I think that I will get a new case, because the system (Atx motherboard) of another computer will not fit in a mini ATX emachines case that I have laying around, therefore increase the cost which is a bummer. I will have to get a new hard drive, and a power supply.