Help installing Rhino 5 anyone please

I have today bought a copy of Rhino 5, and we are having great difficulty installing the software…

My computer is running Windows 7 Ultimate
Memory 8GB
64 bit operating system

Firstly when when put the disc in and click ‘install’ nothing happens
I have tried downloading from the internet twice, and it will not unpack the file…
I can install the Evaluation copy fine… but not the full copy

Can some one please help as I need this installed on my machine

Thank you

Thankyou, but I have now managed to install this, I found your installation tips, the trouble was the fact my machine was 64 bit…

Hi Jackie, can you please tell me more about the solution you discovered? Rhino 5 should install easily on both 32- and 64-bit computers.