I am currently with IB and looking at moving over to Hold Brothers and use their GrayBox API. I really like or at least liked IB's booktrader until they screwed with it to the point that I don't like it anymore. I would like to get programmed something very close (few changes like no auto center, default exchange etc..) that will work with Graybox. I don't care if its in Java or not and actually probably better from a computer resource point of view if not. Any help or direction on getting this done will be great.