NIS Corrupting my Direct2Drive download.

Hello,

 

I downloaded the open beta for Star Trek Online, and get a "The version of this file is not compatible with the version of Windows you're running..." Error when I try to load it.  I checked Direct2Drive's support site, and they list this error specifically, and say it's a problem with antivirus/firewall programs.  I emailed them for advice, and they said Norton specifically is prone to removing files during a download.  They suggest redownloading with the antivirus/firewall completely disabled.

 

My question is, - How do I completely turn off the program?  I can disable it in the window, but Direct2Drive says this isn't sufficient, but that the program has to be completely shut down.  I can't even find an option to shut down the Norton software. 

 

I would prefer a solution that doesn't require me turning off my protections, if possible.

 

I'm running Win 7 64bit

 

Thanks