Internet Explorer 6 - Security Warning pop up window

I have Windows XP Home with SP2. I also have Norton Antivirus 2003, Norton Firewall 2005 and Microsoft AntiSpyware. Everything seems to be aok but recently, after the computer got some new updates for Windows, whenever I surf the internet, these very annoying pop-up windows are constantly appearing and no matter how many times I say ''yes'', they never cease even if I visit the same web pages over and over! Here is an example:

Security Warning
The current web page is trying to open a site in your Trusted sites list. Do you want to allow this? Yes or No.

Now I realise that IE has all these newfangled security measures but I am tired of these constant pop-ups! How can I disable these warnings or at least configure the settings that allow me to visit a site and all links therefrom after I said ''yes''?

All I can find on the internet about this has something to do with Zone Elevation Blocks but am not sure how to go about changing registry keys? Is there a more ''normal'' way to do this?

QUOTE
How do I resolve these issues?

If a trusted Web application cannot be used, you can modify the Internet Explorer security zone settings to allow the application to continue working. You can change the zone elevation setting under for each security zone by setting the registry key 2101 from Disabled to Prompt or Allow. For example, to change the Local Machine Zone Lockdown setting, you would change the key as follows:

HKEY_CURRENT_USER\Software\Microsoft
\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\0

''2101''=dword:00000001 to Prompt

''2101''=dword:00000000 to Allow

UNQUOTE

Any help and guidance would be much appreciated!