Hello, I used the "Win500" program for many years. If you Google it, you should be able to find the download site for it. You can download it and use it for a month for free, which should give you plenty of time to program your radio. I have the WS1040, which is the handheld version of the WS1065. I'm actually going to order the WS1065 in the next week. The Win500 software works on the GRE PSR-500/600 and Radio Shack Pro-107/197 variants. (All were made by GRE up until a few years ago when Whistler bought them out)
Where are you located near Boston by the way? I might be able to put a file together for you. Do you know if the police are using Motorola P-25 or analog?