Your site is hosted on a standard Microsoft web server. As such, you can use virtually any HTML editing tool you desire. The only limitations we have are the application-specific file transfer tools such as 'front page server extensions' and/or 'webbots'. These have been discontinued due to their inherent security flaws.
To transfer the files you edit or create, you need only to use a freely downloadable FTP client software program such as 'cute ftp' or 'ws_ftp'. Visit www.download.com for links to hundreds of free applications.