I went back and forth with Adobe on their cumbersome support procedures and the only thing they could tell me was:

“… The file that we have available on the Adobe Store® is known to work
with Vista. It is possible your original download was either not
complete or corrupted.”

This left me with having to figure out the problem on my own using my skills and knowledge acquired over the years (since 1984) “on the job” to get “that little fella” to do what I needed it to do.

As it turned out I had to jump through the following hoops to do just that. I searched Microsoft’s Web site and discovered a procedure that may help me - and it did.

Sorry for the length, but the following is the procedures as applicable to my case that I followed:

Scenario 3: Configure User Account Control
Scenario 3 outlines three common tasks that local administrators perform during the set up and configuration of client computers running Windows Vista. The following procedures step you through the tasks of disabling Admin Approval Mode, disabling UAC from prompting for credentials to install applications, and changing the elevation prompt behavior.

Disable Admin Approval Mode
Use the following procedure to disable Admin Approval Mode.

Note:
To perform the following procedure, you must be logged into a client computer as a local administrator.

To disable Admin Approval Mode

1. Click Start, click All Programs, click Accessories, click Run, type secpol.msc in the Open text box, and then click OK.

2. If UAC is currently active, a User Account Control dialog box will appear. If so, verify that the details presented match the request you initiated, and click Continue.

3. From the Local Security Settings console tree, click Local Policies, and then click Security Options.

4. Scroll down and double-click User Account Control: Run all administrators in Admin Approval Mode.

5. From the User Account Control: Run all administrators in Admin Approval Mode Properties dialog box, click Disabled, and then click OK.

6. Close the Local Security Settings window.

Disable User Account Control from prompting for credentials to install applications
Use the following procedure to disable UAC from prompting for credentials to install applications.

Note:
To perform the following procedure, you must be logged into a client computer as a local administrator.

To disable UAC from prompting for credentials to install applications

1. Click Start, click All Programs, click Accessories, click Run, type secpol.msc in the Open text box, and then click OK.

2. From the Local Security Settings console tree, click Local Policies, and then Security Options.

3. Scroll down and double-click User Account Control: Detect application installations and prompt for elevation.

4. From the User Account Control: Detect application installations and prompt for elevation Properties dialog box, click Disabled, and then click OK.

5. Close the Local Security Settings window.

Change the elevation prompt behavior
Use the following procedure to change the elevation prompt behavior for UAC.

Note:
To perform the following procedure, you must be logged into a client computer as a local administrator.

To change the elevation prompt behavior

1. Click Start, click Accessories, click Run, type secpol.msc in the Open text box, and then click OK.

2. From the Local Security Settings console tree, click Local Policies, and then Security Options.

3. Scroll down to and double-click User Account Control: Behavior of the elevation prompt for administrators or User Account Control: Behavior of the elevation prompt for standard users.

4. From the drop-down menu, select one of the following settings:

• No prompt

• Prompt for credentials (this setting requires user name and password input before an application or task will run as elevated, and is the default for standard users)

• Prompt for consent (this is the default setting for administrators only)

5. Click OK.

6. Close the Local Security Settings window.