Preview current: HTTP: vs FTP:

using Quanta+ to perform destructive editing of: "ftp://ftp.myhost.com/myfile.php"

(vs. non-destructive editing, in which case perhaps i'm using the local mirror backup at http://localhost/myfile.php, and then later uploading via FTP to a remote site location.)

Quanta opens either internal viewer, or eg. Mozilla ftp://ftp.myhost.com/myfile.php to show the results of the edits.

My preference, however, is to see http://mydomain/myfile.php (on the hypertext protocol, not the file transfer protocol)

How do i configure Quanta Plus to make the distinction between preview on FTP vs preview on HTTP?