So, I just found out that all I needed to do was purchase the keys, I didn't even need to let the game download because all of the files were in the version update I had already run yesterday. All I had to do was get the codes from Steam and register them and I would have been done. However, once you download the steam files, your old install file is broken and you cannot use it.

Why is this information not readily available by SE? Why can't I just buy the codes from the playonline website, register them, and save myself wasted hours of my life?