Does a document exist that lists side by side what upgrades were made from SW2001+ to 2003 and then 2004? We've gotten our 2004 cd's and they (the higher ups) won't upgrade unless there's a real reason for it. They wouldn't install 2003 for that reason. From what I've read and heard, I think 2004 is a more significant improvement over 2003 than 2003 was over 2001+.