I have replaced the hard drive on a PC which has a windows XP licence on the case and been formatted but even though on set up I put in the key at set up stage, when i got to activate it says the code isnt valid as it presumably can see the old hard drive had a different code?

I have a magic jellybean code viewer and its reads correctly on this as per the sticker.

Is there any way round this rather than ring up Microsoft India? as per the prompt on screen as thats a bit of a pain.

Ash