I thought that 301 redirects might be the best option since it does concern permanent changes. However, now I’m not sure how to use the redirect for the main page. I assume that this would be the best way:
redirect 301 /index.htm http://www.mydomain.com/index.php
The only thing I think is strange about this is that normally the site is accessed without /index.php behind the domain. But I assume that this is no problem since there are basically always two ways to access a site:
http://www.mydomain.com
or
http://www.mydomain.com/index.php (or .htm .html .asp or whatever)
is this all correct?