The DMOZ Category Importer phpLD Vault Service allows you to import categories from DMOZ (also known as the Open Directory Project) into your phpLD database. Especially ideal for upstart directories. The service will compile a list of cats/subcats, and assemble them in a series of mySQL statements in a file that that you can import into phpLD database (e.g., via phpMyAdmin).

This mod is offered by the phpLD Vault, a third party vendor, and they require a $15 membership fee.

This mod may not be easy to get your hands on now as the phpLD Vault site is offline.