mod_rewrite problem

I cannot for the life of me figure out how to form this rule...

I need to change this link:

to

thanks a ton in advance, I am a rewrite noob!

This is what I have so far, but it does nothing (doesn't redirect anything)

or

 

Wrong section. Belongs to apache...

 

Thanks, I saw others like this in the main section so I thought it was fine

 

RewriteRule ^index\.php?r=(.*)$ http://www.main.mysite.com/index.php?r=$1 [R=301,L]

 

That code didn't work, so I changed it to

RewriteRule ^?ref=(.*)$ http://www.cash.refstocash.com/?ref=$1 [R=301,L]

because there is no index.php present in the links, it is just a ?ref=##

My second rule now gives me an internal server error

 

I solved it with this:

Options +FollowSymLinks
RewriteEngine On
RewriteCond %{QUERY_STRING} ^(.*&)?r=[0-9]+(&.*)?$ [NC]
RewriteRule ^$ http://www.main.domain.com/ [R=301,L]