Here
http://www.zen-cart.com/showthread.p...36#post1277536
I had suggested to uninstall the script install, although like stevesh has told you that doesn't have anything to do with you not being able to access the server.
As for the upload you could use the control panel upload function - I prefer ftp.

And remember to READ 1.readme_installation.html

Just to make clear you have to read it, there are some file renaming, and permissions setting you HAVE to do before, also you need to have created MySql db, and know it's path - usually localhost, but might be something else - db name, db user, db password.