Hi there, I am creating a recording studio in my house and I am looking for a good desktop. But, I dont know what to buy. I am just doing a little recording and some converting. I am on a tight budget and I dont think I need at MP at all. I have been looking at Powermac g4's on ebay but I really dont know what to buy. I have been looking at like single CPU 500mhz. Would this been enough? Any recomendations? I am looking to spend less than like $150.