I purchased Norton Internet Security (2011) on-line today for my laptop and I am having trouble downloading it. When I go through the download steps, it stalls at step 3 - when I open the executable file, it opens another window C:\Users\karyn\DWNLO~1\NISDOW~.EXE (this window is black) and it just hangs there. I should also mention that I have a pop up virus on my laptop and it is wreaking havoc on my computer (and probably causing the download issue). I purchased Norton to take care of the virus (and future issues) but I can't get it downloaded. Help?