it works for the H7600 also right?
also can i listen to the changes while i make presets in VSIG
You make the preset in vsig then download it to the unit. Then, you can listen to it. It's not entirely interactive, more of a two stage process.
is there a wy to download it before i make purchased a unit?
Yes. You should be able to download it from the Web Site. Be aware that there is a bit of a learning curve – it's not for everybody.