You would probably be better off asking in the Indiana forum, particularly since you aren't mentioning exactly which EDACS system you are trying to program. Our database (see the link in the blue toolbar on top?) has a pretty good listing of systems. When you ask such a question, it's always helpful to supply the link to it, so that others can see exactly what you are trying to accomplish.
It is also good to say whether you are doing this by hand or by software, and if by software, which package. There are many compatible packages for the 996, and 2 are freeware.
However, as a general rule, frequencies in an EDACS system must go in a certain order called the Logical Channel Number or LCN. Each frequency in the database for such a system is preceded by a small 2 digit number - that's the LCN.
I would suggest first reading the Easier to Read 996 manual, and check out the various software packages for this scanner. The FAQ below has links for all of this and much more. Then go to the Indiana forum, and see if someone can give you some pointers, or perhaps even a file that can be imported. The FAQ is here; (all links are in blue and/or underlined)
http://wiki.radioreference.com/index.php/Uniden_DMA_FAQ
The Easier to Read manual is linked at the bottom, and you can see the article that covers programming with software is also linked here.
73 Mike