I had Video calling problem in my Xperia phone. But i Upgrade windows from Sony ericsson site (down loaded the file and did it as per instruction)and now it works vedio
New video calling option came to menu after upgrade..
Follow following steps.
1.Down load upgrade file
2.Run the programme
if phone didnt connect, try other USB port ( I had that prob)
3. follow instructions.
Simple task.. It will work. 100% sure.