如何使用.htaccess文件清理我的URL？

Question

My URL's look like this:

• http://www.example.com/Admin/This_Admin.php?status=changesSaved
• http://www.example.com/Admin/This_Admin.php?action=Edit_Article&articleId=1

I'd like it to show like this:

• http://www.example.com/Admin/This_Admin.php
• http://www.example.com/Admin/This_Admin.php

These are my rewrite rules that I have tried so far:

RewriteRule ^Admin.php/([^/]+)/?$ /?action=Edit_Article&articleId=$1 [L]
RewriteRule ^Admin.php/([^/\.]+)/?status=changesSaved [L]

The point is to not have these pages as a link even for admin. The default should always be This_Admin.php as far as the admin pages go.