Did you assign the "sites" quick keys? Go to menu, program system, stars, edit site, select a site (like Chesapeake), go to set quick key, set a key number (like 1 or 2, etc). push menu until you get back to scanning. All the quick keys should be "On" if not push the correct key (like 1 or 2) to turn on the site. It should work.
If you have any problems...give me a call at the number I provided. I can walk you through it.
The 996T uses different "sites" that correspond to the towers and various control frequencies. Once the TG (which should be in the data I provided) are programmed, they are common to all sites under the STARS system. Depending on your location and antenna, you should be able to pick up the following "sites": Chesapeake, Hampton, and possibly Franklin. Unless you have an external antenna with some height, I doubt you'll be able to pick up Williamsburg or Petersburg. I would suggest you scan at least the Hampton and Chesapeake sites.
I strongly recommend you download ARC 996 Pro software and download the database from the below Radio Reference link. Also, the ARC 996 Pro software has a very nice recording feature that captures the audio, TG identification, and times. This data would be very useful in reviewing information for news reports. I use an external hard drive to store my audio files. Even at that, I go back and erase the files every few days. It works great.
For more information about the "site" frequencies see:
http://www.radioreference.com/apps/db/?sid=3783
Good luck.
Jim