How to upgrade LiveCycle Designer from ES3 (not trial) to ES4 on single workstation install

[jim24670]

I want to upgrade my full registered version of Adobe LiveCycle Designer ES3 to ES4. I've reviewed all the documentation I can find, and even had one of our database admins take a look, but we cannot find detailed information on the steps to do this for our particular setup (single workstation). We installed it 2 years ago but only opened the program a couple of times, and did not save any forms. Thanks in advance for your help....