I've been driven half nuts with people insisting to stick with xp and 32 bits for a new computer. Others say get the vista with quad core and 6-8 ram 64 bits, it's the future. I trade multiple time frames using esignal for the S&P eminis and my Esignal and Ninja get maxed out on my cpu bogging down. You have to pay up to get xp these days and it isn't as powerful as the newer vista, so go with vista? Also vista will upgrade to windows 7 later but xp will not I've heard. Thanks for all opinions.