I'm hesitant to post the address publicly for several reasons.
1- this is an hpt forum which I enjoy being a member of. This would directly circumvent Hpt's licensing.
2- if you don't know what you are doing and change the vin with out the correct checksum you will have a nice 6000lb paperweight.
3- mostly #1
I'd be happy to help in certain cases with changing a vin but must be a legit reason.