Hey Suzette969,
It’s radicalb21. First let me welcome you to the forum. What you have to do is either right click that link and save it as a text file or right click on it and then copy and paste the information into notepad. Then what you need to do is go to the Alwil Software folder then double click that file folder then there will be another folder titled Avast!4 then double click that folder. next look for a folder titled Setup and double click that folder. Once inside this folder all you need to do is replace the servers def file with the newer servers def file which you saved in notepad. Then you will ahve to right click on the blue ball icon in the system tray. Select updating then select program update. now the new files will be downloaded. Once this is done you will have to restart your system. Once it has restarted and you are back to your desktop please click on the blue ball icon in the system try using your left mouse button then click on details and check to see if the network shield is installed. If it isn’t installed please followthe following instructions to enable it. Please follow the instructions in this thread:

http://forum.avast.com/index.php?board=11;action=display;threadid=8333

I hope this helps. If you have any questions please feel free to ask…