No Administrator Account

I am new to Vista and I created an account when I set up the computer.
I then set up another user account for the administrator and changed the
first account I set up to a regular User account. (I am thinking this
is where all or part of my problem is.)

Now my problem, when I log into Vista, the only account that shows up
is my user account and I can not see my administrator account. When I
go to switch users it is not there. Now my son is trying to load
software and it will not let him and is asking for an admin password.
When I type the administrator password it is giving an eror message
"Logon Failure: the user has not been grated the requested logon type at
this computer."

I am at a lost now. Any help would be appreciated.

Thanks,
Jon


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northern_neck