Enabling 32-bit Processes on Windows 2008 64-bit
On a Windows 2008 64-bit machine, IIS can be configured to run 32-bit and 64-bit worker processes simultaneously.
In products such as Argent Commander, the ability for IIS to run 32-bit processes is required in order to function.
1. Open IIS, click Application Pools
2. Select the DefaultAppPool
3. Click Advanced Settings
4. Change the “Enable 32-bit Applications” to True, then click OK