Hello, Maurizio.
The answers to all your questions are yes, except we don’t sell a product named the “Maestro Motor Controller”. Daveh recently posted this example code for VB6 + Maestro which will probably help you. Be sure to configure your Maestro to be in USB Dual Port mode.
To read the data from the sensors, you can simply write a “Get Position” serial command to the Maestro and then read the response bytes back. This can also be done with MSCom.
–David