Download the following files by right clicking and selecting "Save target as"
Save ALL files to your Downloads folder - DO NOT RUN anything yet.
Reboot your system.
BEFORE opening anything else, go to your Downloads folder and run the ActiveX Installer.
Next, run the Installer for other browsers.
Once Flash Player is installed go to: http://www.adobe.com/shockwave/download/alternates/#sp
Download BOTH files, the one on the right FIRST by right clicking and selecting "Save target as"... the other by clicking and following the steps to dwonload the FULL ActiveX installer.
Once everything is installed, see:Enabling Flash Player in Internet Explorer and: ActiveX Filtering in Internet Explorer to make 100% sure that Flash Player is enabled and NOT being blocked by ActiveX controls.