Avoid creating local user during installation

Hi!

During installation, Vista forces you to create a local user with
admin rights. Is there some easy way to avoid this? Since everyone
here has a domain account, there is no need for local users.

Reason why I want to do that: When setting up new machines for domain
use, we have to do the following:

1. Create local user (as required by setup).
2. Finish installation.
3. Activate local Administrator account and set password (used for
emergency administration if there's something wrong with the
domain).
4. Switch to Administrator.
5. Remove local user.
6. Join domain.

This is a bit annoying. I know that I could use the setup-created
local user for local emergency administration, but having that user
called "Administrator" is just *way* more intuitive (especially in
emergencies, where you don't want to have to wonder 'Did I call the
local admin user "LocalAdmin"? Or maybe "Local Admin"? Or "Lokaler
Administrator"? Or was it something else?' We're not a big company,
which is why I would like to keep things intuitive rather than setting
up complicated installation guidelines somewhere.)

Greetings,
Heinzi