hi guys.i want to build a new computer,i would like to use a gigabyte or asus motherboard.i will be using the computer for every day things.i will be playing games,browsing the net,multimedia,burning etc.i also want it to have windows 7.as i say i want it to be a good computer but not the best out there dont want to be spending megabucks,my budget is 3-400 pound.i do want to experience games to a good standard tho and i want the performance to be quite good to.thnx,i am new to the building side of things and i need as much help as poss,so ure info will be much appreciated.thnx guys