.htaccess Help please.

How would I rewrite domain.tld/anything/_a_file_or_another_directory_here to domain.tld/a_set_dir/_the_file_or_dir

e.g domain.com/blah/image/poo.gif -> domain.com/set_dir/image/poo.gif
or domain.com/mcsdfg/index.php?foo=bar -> domain.com/set_dir/index.php?foo=bar

Thanks in advanced,
Millar.

 

RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !^set_dir
RewriteRule ^([^/]+)/(.+) set_dir/$2 [L]

Code (markup):

Checks the request isn't already in set_dir and then does the rewrite.

 

Thanks! It works!!