Norton Not Compatable With Windows 7

Just got a new laptop (Windows 7 Home) and I'm trying to install Norton Internet Security 2011 onto it and all I get is a message saying that Norton is incompatable with this version of Windows.

 

What can I do??

Why isn't it working??

 

We are able to install it on the (Windows XP) PC easily but this is causing a headache!

 

HELP PLEASE!

T.I.A.