You should use the download method to install. The download always has the current updates. The CD is just the beta version and will need lots of updates. And by the way, you can only install the last 3 years (CD or download). They only support the last 3 years so you won't be able to update it or download any state programs you might need. So I wouldn't uninstall any prior year programs.
You should be saving each year as both the .tax and .pdf files.
