无法更改网址,在php中更改网址

I have a site developed by developer.. I don't know php or html,

I want to change url of my site. The current url is like:

abcd.in/index.php?page=9

I want to change it to:

abcd.in/free_classified_sites1

I tried using .htaccess code

'IfModule mod_rewrite.c`
/Enable Rewrite Engine
/RewriteEngine On
RewriteBase /
/Redirect index.php? Requests
/RewriteCond %{THE_REQUEST} ^GET.*index\.php [NC]
/RewriteCond %{THE_REQUEST} !/system/.*
/RewriteRule (.*?)index\.php/*(.*) /$1$2 [R=301,L]
/Standard ExpressionEngine Rewrite
/RewriteCond $1 !\.(css|js|gif|jpe?g|png) [NC]
/RewriteCond %{REQUEST_FILENAME} !-f
/RewriteCond %{REQUEST_FILENAME} !-d
/RewriteRule ^(.*)$ /index.php/$1 [L]

but still new url is like

abcd.in/?page=1

what to do now....

second problem if use .htaccess code , I can't access my sub domain, where I have classified site, but after implementing this code I can't see admin page of my subdomain.

which is like

classifieds.abcd.in/

Try this

RewriteEngine on
RewriteRule ^free_classified_sites1$ index.php?page=9 [L]