i going to get one 4 my b-day next month but will the 4gb be enough i would not put nothing no music, games demos or movies. Just for saving game file like my progress in a game. if i want to play online in xbox live would i need to download something because i don't want use all my 4gb. will this xbox get the red ring of death. will they sell a hard drive like 20gb. will this work http://www.gamestop.com/Catalog/ProductDetails.aspx?product_id=72716 with it to keep it cool