Depending on what scanner you are using, I would suggest checking out the 'wiki' section of radioreference.com. Personally I'm using WIN500 to monitor/stream traffic from my GRE PSR500 and PCRserver to monitor and stream traffic from my ICOM PCR1500. Both are great programs and very reasonably priced to register. But don't take my word on either program (I'm not the author of either program). I would see what software should work with the equipment you have and find what you like/works best for you.
