ace2721

Hello people I need a little help, at my work we need to have office 2003 and office 2007 on the same machines as we provide the training on both products. They have both been installed fine no problems, the problems start when say you are in word 2003 and you have a chart imported from excel 2003, when you double click on the chart it opens excel 2007 instead of 2003 The last thing I want to do is dual boot and put office on separate partitions any help would be greatly appreciated