The Ohist support page on the web contains the latest version. Version numbers look like 2.007 i.e. version 2 release 7. Release numbers increment until there is a new version increment, then they revert back to zero.
To install Ohist the first time go to the Ohist support page on the web and select the latest version. Click on the version and select Run then install it on your computer. The installation program will first ask for a password which must be provided then a destination for the application's installation. Select a folder on the hard drive or install into the default destination.
To install an Ohist update go to the Ohist support page on the web and select the latest version. Click in the version and select Run then install it on your computer. The installation will ask for a password and then a destination to install the update to. Important - the destination must be the same folder as your current version so it can be updated.
This was in the email you received notifying you of the of the version update.
Click on the shortcut on the desktop
Or from the Windows menu select Start / All Programs / OHIST Oral History Abstracts / OHIST Application