Please Help!

Hi People, I bought a Lenovo 3000 N100 Laptop Running Windows XP, A few months Ago and I now want to Upgrade it to Vista..
On Lenovos Website it said that to Express Upgrade to Windows Vista, the system must be Purchased between October 26, 2006 through March 15, 2007,
But i had Purchased my laptop, long time before October 26th

So, is there any other way of Upgrading to vista?, Like Removing XP and Installing Vista?

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