Want to build a new Computer

So I really want to build a new computer. I have a five computer network, but they are all like really old. My newest one is a custom built I umm....was given from my work. It only has 128 mb of ram and like a 20Gb hard drive running xp. Yea I know it stinks. So all I need is someone to give me about a 1000 dollars! I have a awesome computer planned out I just need the money to buy the parts. It is going to be awesome when i finally get to build it!