mrjcleaver, thanks for the input. I see your point, but thought my post fit into the context of this thread.
lunabyte, thanks so much for the link to the cPanel tutorial. It worked without a hitch - almost :)
So I'll add this tip:
My cPanel would not let me delete the .htaccess file, which blocked the installer from proceeding. So I found a workaround by changing the permissions on .htaccess to 777.
That worked, and everything is installed.
But now my question is, should I change the .htaccess permissions back to 644?
(I cross-posted this elsewhere under a more useful heading, by the way.)