Corrupted User Accounts? HELP

Hello,

It looks like I have one or more corrupted user accounts on my home machine,

which is running Vista Home Premium SP1, and I need help repairing them.

Background:

* Purchased Compaq F572US laptop w/ Vista Home Premium pre-installed (this

was some time ago).

* I believe there was a default account created named Owner.

* I created two additional accounts, abc and xyz. All three accounts were

admins.

* I tried to delete Owner, but instead have wound up with some bizarre

incestuous merger of abc and Owner, such that neither one is a complete

account.

* Symptoms (unless otherwise indicated, when logged in as abc):

- At bootup, I am presented with only two account options for login: abc,

and xyz, but not Owner

- Using Control Panel>User Accounts>Manage Accounts I see 4 accounts: abc,

xyz, Guest, and ASP.NET Machine Account...but *not* Owner

- However, a C:\Users\Owner folder exists, and I cannot delete it

- If I create a file and try to save it, the Save File window contains

-Recent Files

-Desktop

-abc

-Computer

-Network

on the left, with the contents of abc's Documents folder to the right.

However, if I select "abc" from the left-hand side, I am navigated to

C:Users\Owner, not C:\Users\abc.

- Much the same thing happens if I open My Computer from a desktop shortcut.

In the folders pane at the left appears

Desktop

abc

Public

Computer

<various drives>

Network

Control Panel

Recycle Bin

If I click 'abc', I am taken to C:\Users\Owner, whereas if I navigate down

the "Computer" path to C:\Users\abc, I reach the correct destination folder

- (Again, still logged in as abc), if I click the Users tab on Task Manager

the only user that shows up is Owner, not abc. And of course if I click the

Logoff button at this point, I am logged off--even though I logged in as abc.

So I have a mess on my hands and no clue how to repair it, given the fact

that Owner doesn't even show up as an account for me to manage. All my REAL

data is in C:\Users\abc\Documents. I don't care which account prevails in

this little techno-throwdown, as long as a) I don't lose any data and b) I

get consistent behavior in navigation.

Side note: I have McAfee Security Center installed (ISP freebie). It has a

backup/restore feature. If I select this feature, the universe of files

displayed for potential backup is that of Owner not abc.