DC2NET Links

Here is where they were:

http://www.mydomain.com/images/

Here is where I will be moving them to:

http://sub.otherdomain.com/download/

How could I create a htaccess redirect for this – so that the subfolder from the first domain redirects to the one from the second. I came across a lot of tutorials redirects like this but nothing exact. Also, this will be a temporary redirect, not permanent.