Anyone know how to change your homepage to a DIFFERENT directory?

This is a great example: http://disqus.com/

When you click that it goes to a welcome folder -

Id love to know the script for that - thanks!!!

I googled this and found this answer - I will test it but does anyone have any comment to add - does it all look ok to you?

I will test and come back to this thread:

Code:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^(www.)?DOMAINNAME.com$
RewriteCond %{REQUEST_URI} !^/my_folder/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /my_folder/$1
RewriteCond %{HTTP_HOST} ^(www.)?DOMAINNAME.com$
RewriteRule ^(/)?$ my_folder/index.php [L]