No matter which software you choose, you need to understand how to work with DMA scanners - there are no banks as you may know them, and there are a few additional hooks with which you need to be familiar. The Easier to Read guide for the 396xt is available in both download and print form, and is highly recommended. We also have an extensive FAQ for these scanners
You will need a USB-serial cable to connect your PC and scanner. The Connecting scanners via USB article is a good place to start.
Finally we also have the FreeScan user guide, so you can see how to work with the software without even installing it
All of this is found here...
Programming Your Uniden Scanner - The RadioReference Wiki
Time to start reading...you might also put where you are (county/state is fine) so others in your area can jump in and help - and we also have state forums...
best regards..Mike