Samsung USB Driver for Samsung Galaxy Grand Duos I9082 is available within the Samsung Kies. You could communicate with your computer to Galaxy Grand Duos through USB cable. Synchronization can be setup for both device. Make sure you download and update to the latest Samsung Kies for Windows 7 or 8 in order to recognize this new device. You can download Samsung Kies from here. Once you have downloaded it, install it into your Windows PC.
You may see different Samsung USB driver package from some forum. It is recommended to use Samsung Kies which includes complete USB driver package.
Download Samsung Kies for Samsung Galaxy Grand Duos I9082 [Link]