Let's get rid of a leftover entry..
Go to Start > Run and type: cmd
In the command window that opens type the following lines hitting the Enter key after each line. Note the spaces and quotes, they are needed.
sc stop "iTunes MusicService"
sc delete "iTunes MusicService"
Please take the following into consideration to maintain a clean computer.
You are running two antivirus programs at the same time (Norton and AVG) but that can cause some serious conflicts and problems. If you want to keep both that's fine, but you should turn off one's active protection and keep it just for updating and scanning.
Visit Windows Update regularly to get the latest security updates.You can also enable automatic updates.Your antivirus software and antispyware programs should also be updated regularly. Make a habit of running scans on a timely basis. Be careful about what you download, scan every file before clicking on it.
Additional programs to consider:
Spywareblaster Prevents the installation of ActiveX-based spyware, adware, browser hijackers, dialers, and other potentially unwanted software.Blocks spyware/tracking cookies in Internet Explorer and Mozilla/Firefox.Restricts the actions of potentially unwanted sites in Internet Explorer.
Spywareguard An anti-virus program scans files before you open them and prevents execution if a virus is detected - SpywareGuard does the same thing, but for spyware!
Adds a list of malicious sites to your Restricted Sites Zone.
Firefox An alternate browser safer than IE
A good article to read:
So how did I get infected in the first place?