Last night used FilZilla to remove folders, a bit better than CuteFTP as I can see what is going on at the "message log" windows. It took a long time to have folders removed as they are very deep even though very few files are there.
Tried also simultanously setting up new subdirectory under root domain such as emba or poly8081 or emba2006. Only WP installation at /emba was successful but further installaton wasn't done because WP said I must clear tables of the old database used. I have yet to learn how to do that. There was also outage message and DreamHost was not responsive hence I stopped at 1:30am, very sleepy.