Hi,
if I'm the only user on the machine, why can't I be the Administrator.
Why do I need another user to be the Administrator (which can be deleted)?

is there a why to install Vista with the Administrator activated as the single user in town?

The very first account you set up on Vista install is in the Administrators group automatically. If you open up the Administrative Tools - Computer Management - Local Users and Groups - you will be bale to enable the Administrator account to show on the login screen, don't forget to set a password for it once you enable it. Then if you want to auto-login to the Administrator account (not recommended) look in the Vista Tweaks and Tips section where I posted how to do an auto-login.

No, there isn't a way to have the actual Administrator account as the only account you create on install, except maybe in an unattended install sceinario. You can name your install login account as Administrator but its not the actual Administrator account. After the install is complete what you can do is after you enable the Administrator account outlined above is log into the Administrator account and then remove the first account.

Now, all this being said, I think in the unattended forum there was something about how to create only an Administrator account upon install with an unattended install, but I haven't looked and just remember seeing something related to the Administrator account there but i'm not sure.

OK, let's complicate thing a little.
I have set the default user to be a regular user, & activated the Administrator Account.
now I have auto-logon for the regular user.

how can I login as the Administrator?

"how can I login as the Administrator?"

After you activate the Administrator account, do this: How to enable auto log on

Or if you don't want to auto logon the admin, you can log in as the admin in a few different ways:

1. At the log in screen when Vista starts

2. You can 'Switch User' from another account (the other account still stays logged in)

3. You can log out the current users and log back in as the administrator.

The auto-logon is set for the second regular user.
isn't there a way to prevent from the auto-logon to activate so I could logon as the admin?

Yes, go to the link I posted above, but instead this time disable the other account and then set up the auto logon for the Administrator. Or...disable the other account and show the admin account on the log in screen and log in manually.

I want both user active all the time, just the Administrator be accessible by me only...

OK, thanks, I got the idea...

If you don't want any other users to have admin privilages then don't put them in the admin group. Remember, on install the first account created is in the admin group, but accounts you create after that are not in the admin group. If you want the admin account to be only available to you then password it with a password known only to you.

of course, thanks