It's hard to tell what atl7.dll is-some report it as spyware, some say it's Music Match.
The real problem may be CCApp, which is part of Norton.
See here: http://www.virtu-software.com/ask-doug/QandA.asp?q=61
I like what this guy says, as I really, really detest Norton products.
You might want to uninstall Norton and get something like AVG free. which ha served me well for years.
you can download and put it in the system32 folder where it should reside, ,i have it there + 10 other places all Nero, but a larger file .
you may have a problem with the windows program mention in the link,and you may need to search for and install the program .
info here . http://www.google.com/search?q=%22ATL%20Module%20for%20Windows%20(Unicode)%22