Accidentally Removed Administrator Account

Hopefully this is in the right forum, I don't know much about computers
Anyways, I have a Dell running Vista Buisness 32 bit that was issued t
me by the Navy. I'm out of the military now and wanted to change aroun
some of the user settings (some kinda annoying DoD login stuff) bu
unfortunately managed to do something dumb. Rather than just modifyin
the login screen which I meant to do, I think I removed th
administrator user account.

Before, whenever I wanted to change anything about the computer o
install something, etc, I would get a little message asking "Are yo
sure?" and then asking for permission. I would just click okay and it'
work.

Now, though, when I go to change something (like trying to do a "Syste
Restore" after my mistake) it comes up with that same permission box
but is asking for a user name and a password that I don't have/didn'
set up. I don't know if this is because I totally wiped ou
administrator controls or it's asking for the infor our IT folk put int
it before (if they did leave themselves an entrance account I can't ge
the info for it

All the changes I made were through the control panel, user account
interface

Any help or advice you guys could give me would be very muc
appreciated, the OS still works overall but I can't install anythin
new, or download anything, or even use some programs/processes alread
installed.

And yes, I know I'm an idiot[image
http://www.vistahelpforum.com/images/smilies/frown.gif

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m121038