How to redirect site

[popular]

I'm trying to redirect my site so that when you type mysite.com it will redirect you to www.mysite.com. I've tried adding this to .htaccess but it does not work for some reason..
RewriteEngine On
RewriteCond %{HTTP_HOST} ^example.com
RewriteRule (.*) http://www.example.com/$1 [R=301,L]

[Juggernaut]

This is what I have in my .htaccess, maybe it will help you. I have it at the very top of the .htaccess.

Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^example\.com
RewriteRule ^(.*)$ http://www.example.com/$1 [R=permanent,L]

[popular]

thank you, had to add Options +FollowSymLinks and it worked :)

[Sharkyman]

This is gonna sound a bit thick but for some reason my site cannot be accessed by it's proper url www.doublefinish.com but can by www.doublefinish.com/vbul

How do I change it back?

[popular]

You could try changing your forum URL by going to Admincp->Settings-> Site Name / URL / Contact Details, you will have to upload some files via FTP if you do this, there are more detailed instructions if you click the "?". Not 100% if this will solve your problem tho. :)