301 Redirection Help: I have modified both web.config and htaccess but no Redirect

Dear Friends, I am facing the most bizarre of the problems and any help is much appreciated.

INFO:

my domain is grasshoppernetwork.com and i want to permanently redirect it to www.grasshoppernetwork.com
My server is hosted in shared hosting in windows II7 Server. I am hosting a MyBB forum in the base domain.

Here is my Web.config file snippet

<rule name="Redirect domain.com to www" patternSyntax="Wildcard" stopProcessing="true">
            <match url="*" />
            <conditions>
              <add input="{HTTP_HOST}" pattern="^grasshoppernetwork.com$" />
            </conditions>
            <action type="Redirect" url="http://www.grasshoppernetwork.com/{R:0}" redirectType="Permanent"/>
          </rule>

Code (markup):

I have put that in wwwroot and also the hosting folder. But it does show 200 response code for

grasshoppernetwork.com returns a 200 (OK) response.
www. grasshoppernetwork. com returns a 200 (OK) response.
grasshoppernetwork.com/index.php returns a 200 (OK) response.
www. grasshoppernetwork.com/index.php returns a 200 (OK) response.

So I also Modified My htaccess. Here is the snippet

RewriteEngine on
    RewriteRule ^forum-([0-9]+)\.html$ forumdisplay.php?fid=$1 [L,QSA]
    RewriteRule ^forum-([0-9]+)-page-([0-9]+)\.html$ forumdisplay.php?fid=$1&page=$2 [L,QSA]


    RewriteCond %{HTTP_HOST} ^grasshoppernetwork.com
    RewriteRule (.*) http://www.grasshoppernetwork.com/$1 [R=301,L]

Code (markup):

Still the same problem. Have I gone wrong somewhere? Can somebody please help me?