hi everyone, im now going to build "my own" pc. i done 2 for my kids at xmas. so, i need spec advice. ive got a rough budget of £500, but am flexible on that to a point. my pc will be used for hd video and pictures and general use like music. i dont want to overclock. the things i know i dont need are, mouse, keyboard, monitor and os. thanks for taking time to look.