Norton Antivirus with Antispyware 2011 Will Not download

I have tried 3 times to download my CD and my pc starts to read it but that is as far as it goes. I cannot get this Norton in.  Nothing shows up on my screen. I have rebooted 3 times and still nothing.  My now proctection (elsewhere) is up on 8-09-11. I do not know what to do.

 

Any suggestions?

 

Thanks,

Debj