virtualbox.org

I have tried installing VirutalBox 3.0.0 for Windows hosts on my Windows 7 64-bit host (Intel i7 920 CPU). After I click "Yes" on the UAC dialog the installation file flashes a dialog and then exits memory. I have tried various things like "Run as Administrator" and/or compatibility settings for XP SP2, Vista... nothing works. I have re-downloaded the installation file, to no avail.

Is there some trick to getting the installer to run?

Moving to Windows 7 RC hosts

You need to post the guest settings including the host memory for us to be able to help you. Also if you see any error message it would help to know what it said.