A bank is giving away BW status with a new account, but it seems you can sign up without a banking relationship. Here is the info you’ll need:
Go to www.gcciasia.com/scb
Enter promo code: BWSCB2008
First 6 Digits of Card: 486419
You’ll get room upgrades, bonus points and the right to buy points at $10 per thousand
Haven’t done this myself, so your mileage may vary.