Can't uninstall AVGFree

Roger, Before attempting to install AVG did you download & run the McAfee total removal tool?.. (http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe). 
AVG Guru

Hi.
I recently bought a new PC with Mcaffee firewall and antivirus installed.
The subscription expired after a month, so I downloaded AVGfree, for virus protection and ZoneAlarm for the Firewall.
I installed AVG first. When I installed zonezlarm I found that it included antivirus protection.

I don't need two antivirus programs so I tried to uninstall AVG using Control Panel "Programs & Features".

I got the following message

"You cannot uninstall AVG ZEN now.

To uninstallAVG ZEN you must first unistall the following products that are integrated into AVG ZEN:

* AVG Protection."

AVG Protection is not listed in "Programs & Features" so I can't uninstall it.

I have looked in Task Manager and found that AVG Service process and AVG Watchdog (32 bit) are running and I cannot stop either process.

I could just delete the AVG folder and is contents, but this will not clear the details in the Registry.

How do I get rid of AVG?

Thanks

Roger, Before attempting to install AVG did you download & run the McAfee total removal tool?.. (http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe). 
AVG Guru