hi, it is very simple to connect GT-B7722 to PC. please this following steps,
1- First check you have installed the 2 CDs given with it. If not, then install CD-1 and CD-2 both.
2- A samsung KIES software will be shown with its all features like videos, images, musics etc.
3-if both CD properly installed, then there is two ways to connect your mobile to PC...
A- through Data cable/USB cable i. connect one side of data cable to first samsung GT-B7722(star Duos) and another to PC.
ii. Automaticaly Samsung KIES will open, wait for sometime and your phone will be connected.
iii. if not, then close and reopen the KIES. Check whether your phone is not in sleep mode, first unlock your mobile.
B- through blue tooth i. first check your computer has blutooth connection support, and your mobile has buletooth ON.
ii. then open KIES and open 'Device Connection Guide' on right-up corner.
iii. select 'Bluetooth Connection' and search for your device.
iv. select your device on PC and click 'Connect'.
YOUR MOBILE CAN BE CONNECTED IN EITHER WAY...
if still you have problem please concern with your nearest 'Samsung Care'.