I tried changing the general preference, but it didnt change my email from "@yahoo.com" to "@yahoo.com.sg". The reason why i dont want to make a new account with the extension of ".sg" is because I dont want to email all my contacts about the change. So is there any way i can just convert it to @yahoo.com.sg without making a new account and eventhough my friend email me @yahoo.com, i will still receive it.