ClickOnce returns the contents of the .application manifest

I have the same problem as someone named RBS posted on Jan 16 2006
I quote:
"I have deployed an application with ClickOnce Publish wizard to a web site.
But when I click web page Install button the web server just returns the
content of the .application file as XML to the browser on all my clients. On
my Development system it works fine."

One of the followup messages stated (again from quote)
"This might help others. All I had to do was create a file with these 3
lines
AddType application/x-ms-application application
AddType application/x-ms-application manifest
AddType application/octet-stream deploy

and transfered via ftp to the directory on the apache web server where the
publish.htm file resided. "

My ISP is Adelphia.net all I have is their Personal Web Space service which
I imagine is
the bottom of the barrel in terms of ISP web hosting services available (its
free to adelphia customers).
Does anyone know if adelphia can support this ClickOnce deployment?

Ed.