I get an error code re: AVG

I get an error code when trying to connect to the server.
It says:- The server cannot be converted to the IP address.
Failed with error code Ox81000002
also anti-virus components status could not be determined,connection failed.
Resident shield is not loaded.
Anti-virus component is registered correctly, however determining status failed.
This is all above my head and I am totally confused.
My computer is a Dell dimension XP when I brought the computer there was aol installed and lots of programmes from dell, I am not sure if these are stopping me install AVG.
Could you PLEASE help me sort this out. Thanks for any advice you can give me.
adeliene

 

Thanks for your reply, My norton anti virus expired yesterday, but I will now check to make sure I have deleted it from my computer. I was trying to install AVG and I think your right about my system not having permission because of a firewall, but I don't know how to delete a firewall. I am not very clever with my PC. I keep getting messages saying application LEXPPS.exe is trying to establish TCP connection with remote IP it says will I allow or deny the connection, as I don't understand what LEXPPS.EXE means I don't no how to reply. what do you think I should do? I am really grateful for your help.

 

shows how dozy I am, I did have norton firewall, but have deleted all norton symantic, so I don't think there is a firewall at the moment so am desperate to get avg sorted soon. How do I find out if there is a firewall working on my pc?

 

thanks for your help, there is a lot for me to digest in your message and i will delete my avg and install again, but i have a message that says AOL connectivity service is trying to establish UDP connection with remote IP address. and next to the message there is flames, so is that a firewall I didn't know about? when i got the pc lots of aol was already installed by dell. what do you think?

 

I think it's great that your trying to help me, and I need time, so don't give up on me yet. I have already deleted norton and i have tried to install the norton removal tool , but not sure because the site looked complicated. i couldn't see where the download was I will look again.

 

Thankyou for your help, it all seemed so complicated that i took the cowards way out and installed norton again, now i feel that i can get on with my work without worrying. you have been great and i'm slow at learning so thanks again. you listen and helped me.