It may take time to create them manually, but if you are serious about the future of your directory, it will benefit you in the long run to create your own categories by hand with unique descriptions and keywords. The potential for hundreds of directories to share that same category dump is too risky IMHO.
Try this one Click here to be taken to thread There is some free ones as well you just have to have a look on that forum for them.
who said that using same category dumps for a directory will attract penalty from search Engines Even though the categories are same the content inside the pages will be different(that is the listings will differ) so I think there will be no problem with category dumps