Unable to install NIS

I recently purchased NIS 2012 through Amazon.com. I was sent a download link and my product key, however, when I try to install it on my laptop I get this message: 

 

Error: Network Connection may be unavailable. Please check your internet connection and try again.

 

My internet connection works fine. I am able to browse anywhere I like, I just can't seem to download from the link provided by Amazon :( 

 

Dell Laptitude

WinXP 32bit Home

Wired Connection

?????