Autounattend.xml

Hi

I've got a autounattend.xml that works great, adds machine to domain etc set
up ready for gpo to take over. However, what I'd like to be able to do is
presever the name of the machine when vista goes on.

According to WSIM
microsoft-windows-deployment, auditcomputername - Name is the field if no
value is present then it "keeps the current machine name

I can't get this to work at all and end up with a randomly generated name
each time; auditcomputername only works in the auditsystem pass and when I
set for the audit to run via oobe/reseal it does go into audi mode but then
does nothing.

is there an easy way to keep the exisiting machine name?

regards Matt