As David said. This has been scripted here.
http://windowsxp.mvps.org/htmleditor.htm
Note that the script does not accept command-line parameters.
--
Ramesh, Microsoft MVP
Windows XP Shell/User
Windows XP Troubleshooting
http://www.winhelponline.com
"David Candy" <.> wrote in message
Adding HTML Editors
The steps for adding HTML editors to the drop-down list on the Programs tab
of the Internet Options dialog box in Internet Explorer 5 and later are
slightly different than the steps for adding client applications like mail
and news.
1.. Register the friendly name of the HTML editor by adding a new key to
HKEY_CLASSSES_ROOT\.htm\OpenWithList.
HKEY_CLASSES_ROOT\.htm\OpenWithList\friendly name2.. Add shell, edit, and
command keys to the editor's registry entry.
HKEY_CLASSES_ROOT\.htm\OpenWithList\friendly name\shell\edit\command3..
Enter the fully formed path of the .exe file that launches the editor in the
command key's "Value data" field. Enclose the path in quotes if it contains
spaces. The following example shows the Value data entry for a typical
installation of FrontPage Express. Include %1 as a parameter. This parameter
refers to the file name of the active Web page.
"c:\program files\microsoft front page express\bin\fpxpress.exe %1"