When I try to install on Windows Vista it says:
"There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support personnel or package vendor."
This is caused by trying to install as a regular user (default install mode) instead of as the administrator. Follow this procedure:
1. Copy the .msi to a folder on your machine.
2. Start a command prompt with Admin privileges. [On the start menu, highlight the command prompt and right-click-> Run as admin]
3. Navigate to the .msi and launch it from there.