Folder to sub-domain 301 re-direction

Hello,
I want any queries to a folder, say
http://mysite.com/folder to be redirected to http://folder.mysite.com
How will I do this using .htaccess?
thanks.

 

redirect 301 / http://folder.mysite.com

 

RewriteEngine On

RewriteCond %{REQUEST_URI} folder/
RewriteRule (.*) http://folder.mysite.com/$1 [L,R=301]

Code (markup):

I hope this helps

 

thanks...i will try this itdevil