“Type mismatch ErrNumber: 13 (0xD) Error Trying To SET the Property: Enable32BitAppOnWin64″
You may face this error message while the installation of WSS (Windows SharePoint Services) on Windows 64 bit machine.
Whenever your install Windows 64 bit OS with IIS 6, by default it install IIS in 32 bit.
FIX :
Following are the steps to fix this error message.
1]
First execute following command which will disable IIS 32 bit
cscript %SYSTEMDRIVE%\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 0
2]
now execute following command to enable s 64 bit support
%SYSTEMROOT%\Microsoft.NET\Framework64\v2.0.50727\aspnet_regiis.exe -i
You can now proceed with WSS 3.0 installation 
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