Long story short I replaced an outdated site with a Drupal site at its previous url, let's say oldsite.org. But the old site was also accessed from oldsite.org/THIS, I think because it was a subdirectory of a larger site or something. But there are old links around that use oldsite.org/THIS and we want those to go to the homepage of the new site.
What is the proper Drupal way to do this redirect? I have thought of a handful of possible hacks, but I want to do it right. Maybe a small module to handle the redirect. Or even htaccess somehow?