Connecting With pc via USB I use Symphony w71.Though it would connect with PC but after root I find no option to connect with PC.It charge but not connect with computer.My phone debug option is on also enabling Root permission.What should I do now??
Once you connect your phone to your PC, unlock your phone and follow these steps 

Pull down the Status/Notification bar. You must be able to see the type of connection. Press on it.   

You must be able to see several options like Media device(MTP),  Camera(PTP), Charge only and Mass storage(UMS).  

For your requirements, I suggest you choose the MTP connection. The UMS would just mount your SD card as an external device and ignore the internal storage.  

You must be able to view your phone being connected to your PC by now and I would suggest you keep your screen unlocked till you disconnect your phone from the PC