How to configure 64-bit Windows 2008 to run 32-bit applications?

On 64-bit Windows 2008, IIS 7 can run both 32-bit and 64-bit worker processes simultaneously. To run 32-bit Web applications in IIS 7 on 64-bit Windows 2008 all it needs to do is to assign the 32-bit applications to a separate application pool in IIS and turn on the Enable 32-Bit Applications switch for that application pool. To do this, open IIS Manager, open Application Pool, select the application pool, and then click Advanced Settings. In Enable 32-Bit Applications, select True.