How can I force IIS Express to run in 32 bit mode?

I have a classic ASP app that I'm trying to run under IIS Express on 64 bit Windows. It uses Jet to connect to a Microsoft Access database and will not work under 64 bit.

I have created the following application pool for the ASP app, but it seems to ignore the enable32BitAppOnWin64 attribute and the process is still 64 bit.

<applicationPools>
    <add name="UnmanagedClassicAppPool32" managedRuntimeVersion="" managedPipelineMode="Classic" autoStart="true" enable32BitAppOnWin64="true" />
</applicationPools>

How can I get this app pool in IIS Express to run as a 32 bit process?

Solution

According to this, IIS Express 7.5 comes only as a 32 bit application. IIS Express 8.0 however, comes with both 32 bit and 64 bit versions of the application. The 32 bit version can be found at c:\program files (x86)\IIS Express\iisexpress.exe and the 64 bit version can be found at c:\program files\IIS Express\iisexpress.exe.

IIS Express ignores the enable32BitAppOnWin64 attribute. To run the app pool as 32 bit, you must execute the 32 bit version of IIS Express.

You can determine which version is running in Task Manager by examining the process on the Processes tab. The 64 bit version will be displayed as iisexpress.exe and the 32 bit version will be displayed as iisexpress.exe *32.