a) Make a copy of the header file (e.g. [user@machine /path/to/nuke/]# ; cp header.php htmlarea_header.php
b) insert the code below in your new header file before the following line:
echo "\n\n\n</head>\n\n";
somewhere around the first 50 line of the file:
echo " <script type=\"text/javascript\">\n";
echo " _editor_url=\"/htmlarea/\";\n";
echo " _editor_lang=\"en\";\n";
echo " </script>\n\n";
echo " <script type=\"text/javascript\" src=\"/htmlarea/htmlarea.js\"></script>\n\n";
echo " <script type=\"text/javascript\" defer=\"1\">\n";
echo " HTMLArea.replaceAll();\n";
echo " </script>\n\n";
c) Check so the paths are ok.
d) Change the header.php include in the news index file (e.g. [user@machine /path/to/nuke/modules/News/admin/]# vi/vim/edit/whatever index.php)
e) Search for 'function adminStory'
f) A few lines below the function start, replace the include file 'header.php' with your new 'htmlarea_header.php'
g) Save all and reload your browser.
Now, I suppose you are aware of that nuke already has a built in wysiwyg editor you can switch on and off in the config file.
good luck
/j.