The phone number I and the staff of my company is using for activation, is all times the same in Singapore, it's an Toll Free 800 number. As long as there isn't any hardware changes, the Computer ID is the same all times, it changes if you change the MB, Graphic Card or System HDD! The activation code getting from MS via phone, will be every time different, even if you call within 1 hour again because something went wrong! It's not bound to the day.
You talking to me? LOL .... why not? Thanks for the clarification, now I know a bit more on phone activations. (Yes I meant the codes you get from the MS machine operator.)
The Operator also tell that those code he/she is giving need to be key in directly! Again, call an hour later and you get a new code!!