Question : mod_rewrite single directory to an external domain

Hi,

I'm trying to use the .htaccess file to route incoming traffic to a subdomain for old archived pages. I'm switching to a new format and want all of the old pages that are indexed in Google to still redirect.  I've create http://archives.realvail.com.

I want to route this:
http://www.realvail.com/RealNews/848/Vail-Resorts-to-host-Lindsey-Vonn-celebration-in-Vail-Wednesday-March-31.html
to this:
http://archives.realvail.com/RealNews/848/Vail-Resorts-to-host-Lindsey-Vonn-celebration-in-Vail-Wednesday-March-31.html

My current htaccess mod rewrite code:
# Rewrite article URLs
RewriteRule ^RealNews/([0-9]+).*$ /articles.php?artid=$1 [NC,L]

I'm using Zend_Router too so this domain currently will go to my homepage unless I can redirect it to archives subdomain.

Thanks for any help.

Answer : mod_rewrite single directory to an external domain

RewriteRule ^(RealNews/([0-9]+).*)$ http://archvies.realvail.com/$1[NC,L,R=301]

If both sites (www and archives) are on the same vhost, add this rule before the rewriterule:
RewriteCond %{HTTP_HOST} !^archives.realvail.com