I have seen automatic directory submission engines before. But I want to minimize my work by submitting my new site to an engine that has the most directories. Submitting my site to 100+ directories manually just isn't too much fun.
I just got not too long back, a great piece of software that now it has been updated to remove directories that went paid or recip only, does a darn good job of submitting my sites to 265 directories. The owner of the software will keep updating it to remove directories that do go paid or recip only, add new ones (does take time to do so, as the correct submission page for each directory has to be added in right), etc. I even use this software (I had bought and tried a couple of others prior to this one) to offer submissions to others for a very small fee. See the buy,sell,trade forums.....services forum, for my service.