I'm not a pro in WP but I'm trying to help my friend move her site. We changed the URL to do some further work on it before switching the domain, and I did the safe search-and-replace script in the DB, fixed everything I could find with a hardcoded URL in the php scripts, and updated wp-config. However, while the database hooks up and the front page displays more or less correctly, all of my links are dead, as well as the wp-admin section. Everything using a local WP path gives me a 404 except the top index page.
Any idea where I could start looking? Competent in php but not in WP.