found this this minute - over 6000 people reporting it works.
KMS method to activate your Vista !! (Business edition only)
Step 01:
Install Vista FINAL RELEASE with Key YFKBB-PQJJV-G996G-VWGXY-2V3X8
Choose "Business edition" ONLY not others !!
Step 02:
When Windows setup completed and Internet access setup completed.
Open Command Prompt under "Administrator Mode",
That is, right click the Command Prompt icon, select "run as admin"
Activate your Business Vista against sito.kmip.net
(This is a private KMS server for Volume License 2.0a activiation).
Now in command prompt (Admin mode)
type -
cscript c:\windows\system32\slmgr.vbs -skms sito.kmip.net
cscript C:\windows\system32\slmgr.vbs -ato
Activate completed !!
Now you may wish to check the activation status
type -
cscript c:\windows\system32\slmgr.vbs -dlv
*************
KMS Volume License activate requires re-activate every 180 days.
The reactive will be done automatically.
Only works for Business Vista and Enterprise Vista, not other editions!!