I have a few issues with my Internet Security

If anybody can help with this, please do. I've been fighting to find a solution for this for the last 10 months!!!  Please HELP!  Thank you!

I get two error messages trying to reinstall or uninstall Internet Security. Here is the message for the reinstall (they are both the same message basicly). I wrote the error messages verbatim.
 
Error installation message:

Service 'AVG Firewall" (avgfws) could not be stopped.
Verify that you have suffieient privileges to stop system services.
Severity: Error
Error Code: 0xC0070643
Error message: General internal error.
Additional message: MSI Engine: Failed to install the product.
@AVG MSI_Error 1921
Service 'AVG Firewall (avgfws) could not be stopped.
Verify that you have sufficient priviliges to stop system services.
(0xC0070781)
Content: AVG product installation, MSI action failed.

Uninstallation error:

Service 'AVG Firewall" (avgfws) could not be stopped.
Verify that you have suffieient privileges to stop system services.
Severity: Error
Error Code: 0xC0070643
Error message: General internal error.
Additional message: MSI Engine: The removal of the product failed.
@AVG MSI_Error 1921
Service 'AVG Firewall (avgfws) could not be stopped.
Verify that you have sufficient priviliges to stop system services.
(0xC0070781)
Content: Uninstallation of AVG, MSI action failed.

contact me at taylorjb@mts.net

Hello Jeff. Sorry to hear about the inconvenience caused. I have sent you an email instruction with further steps to be taken to resolve your issue. Please follow those steps and you should be able to configure your AVG.
Please feel free to contact us should you need any further assistance.

Hello Jeff. Sorry to hear about the inconvenience caused. I have sent you an email instruction with further steps to be taken to resolve your issue. Please follow those steps and you should be able to configure your AVG.
Please feel free to contact us should you need any further assistance.