I would have prefered to use the linux live CD method you described, but I needed to move a partition rather than the entire disk. You voiced concerns about whether or not the DD method would work for moving partitions so I gave the Vista install disk tools method a try.

It was kind of slow, just like Vista installation itself, and clumsy. In the end, I did need to reactivate windows. That process included:

- Windows telling me my original key was "currently in use"
- Calling tech support and dealing with giving/getting a 25 character alphanumeric key to/from a non-native english speaker. Even from a native English speaker that is a pain.
- Windows telling me the new key was "not valid with this version of Windows."
- Being told I would have to call back in an hour and given the "pay per incident" support phone number.

In a few minutes I just tried the automated phone support option in the activation window.
-The "activation ID" (or whatever it's called) I received automatically did not work.
-I was connected to another "technician"
-I only had to give her the first 6 digits of the 48 digit activation ID (phew)
-She gave me a new 48 which finally worked.

Who knows if it's using my new key or my old key, but now I understand why people try everything possible to avoid re-activation.