AE 7.0 Professional won't install on Windows 7 64bit

When I insert the disc and the Autoplay comes up, I click on the first option "Install After Effects 7.0".

A window pops up asking me what language I am using. I select English and then the setup window comes up with an error message window behind it. I have to move the setup window to read it. It says:

"Runtime Error

Program: D:\Adobe After Effects 7.0\Setup.exe

This application has requested the Runtime to terminate it in an unusual way.

Please contact the application's support team for more information."

What can I do?

Thanks!