Moving site to new domain

Is there anything I can do to redirect all the pages that google has indexed for the old domain to forward to the new domain or are they just a lost cause?

if you own the old domain still and have a hosting account set up for it, you can direct all from the old to the new with a simple htaccess file on the old .com, passing with a 301.

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

well im going to be forwarding the domain to the other domain sub forum now.

So like it will be

olddomain.com -> newdomain.com/subforum