First off, let me start out by saying that I'm not very tech savvy at all, so some patience and assistance will be needed in order for me to give more information / preform fixes.
This problem has persisted for quite a while and I've ignored it by using other computers for over 4 months. My computer was infected with a virus a while ago and I took it to the Geek Squad at Best Buy because I could not access the internet or update anything.
The internet connection problem was fixed, but I'm still not able to upate anything except Windows itself.
I try to download antivirus software, but am unable to use them because they cannot update the virus database.
I cannot access World of Warcraft or Final Fantasy XI because both of them have released updates that I'm unable to download and install.
I've tried following the advice Blizzard and Square Enix gave me, such as allowing certain ports on my firewall, but the problem will not go away. Even with no firewall or antivirus software active, I can't update anything.
My operating system is Windows XP and to the best of my knowledge I have an up to date version of it.
Any advice you might have would be very much appreciated,
Zach
(I apologize if this question was addressed elsewhere, but for some reason I'm unable to use the search function of the website, it says something about an internal server error or the website undergoing maitenence)