@HammyBits, you can edit the MSI yourself it's easy.
1. Download the Windows Installer 4.5 SDK from here:
http://download.microsoft.com/download/ ... i45sdk.msi and install it.
2. Go to C:\Program Files\Windows Installer 4.5 SDK\Tools and double click on 'Orca.msi' to install it.
3. You can save the Orca installer somewhere and uninstall the MSI 4.5 SDK. You don't need the SDK any more if you don't use the other tools besides Orca.
4. Download the Fix It MSI for KB216893 (
http://support.microsoft.com/kb/216893). Save it somewhere.
5. Start Orca from the Start menu and open the MSI file you downloaded for the Fix It in Orca.
6. Orca will load that MSI and show its table. Locate "LaunchCondition".
7. In the right column with "LaunchCondition" highlighted, select the first row which is called:
((VersionNT=500 OR VersionNT=502 OR VersionNT=600 OR VersionNT=601) AND MsiNTProductType<>1) OR ((VersionNT=501 OR VersionNT=502 OR VersionNT=500 OR VersionNT=600 OR VersionNT=601) AND MsiNTProductType=1)
and delete that row by pressing the Del key on the keyboard.
8. Save the MSI and close Orca.
9. Now it should install on Windows 8.
Note: Instead of deleting that row, you can also add 'OR VersionNT=602' for Windows 8 but you will have to update it again for the next release of Windows, so it's better to just remove the check.