Hi there. I'm no techie. I recently did a recovery on my lenovo laptop (long story). When I tried to open my documents, I got a message that I needed to use Office 2010 to open them now, even though my computer has Office 2003 and this was has the docs were saved originally. So now I have Office 2010 and want to install it. Do I have to remove 2003 first? Any other comments?