.htaccess file problem in sundirectory.. plz see this code

Hi Friends,I installed a html website in my godaddy hosting and had a .htacess file in the root directory for 3 reasons:

1) non www to www, 2) .html to .php of index page, 3) to redirect mysite.com/index.php to just mysite.com.

Below is my code for the above 3 issues.:

RewriteEngine On
Redirect 301 /index.htm http://www.mysite.com/index.php


RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} !^www\.mysite\.com [NC]
RewriteRule ^(.*) http://www.mysite.com/$1 [L,R=301]


Options +FollowSymLinks
RewriteCond %{THE_REQUEST} ^.*/index.php
RewriteRule ^(.*)index.php$ http://www.mysite.com/$1 [R=301,L]


The above is working fine with my main website. The problem started when I installed wordpres blog in a folder called 'myfolder' in the root firectory.

Installation works fine but the blog gives error message : the site is not redirecting properly..

from my above code: if I remove the lines in bold and red color, the blog works fine. but if i remove, my www, non www issues does not solve.

some one please guide me what to do..

Thanks in advance.

 

Thanks, I solved the problems. I changes in wordpress settings from non www to www.