DefenseWall question

I downloaded the trial version of DefenseWall to see if it was compatible with my other security applications. When I installed the program there were several files in the "Untrusted applications". My question is is there anything else I need to do or is it safe to use the program without any input by me? Most security programs I install I just use whatever the defaults are would this be the same? I posted the question on the DefenseWall forum but the answer I received didn't really answer my question. I am not very experienced with security programs and can be very dense at times. Is DefenseWall a program that can be installed right out of the box and forgotten about? All replies will be very much appreciated and I thank you in advance for your reply.

John