It requires ASP.NET 2.0 32-bit and IIS 6.0 configured to run this. With Windows Server 2003, IIS 6.0 can run 32-bit applications on a 64-bit Windows using a compatibility layer which is called WOW64.
NOTE: Once it is configured IIS 6.0 to run on 32-bit, it is not possible to run other 64-bit web applications. And install the both prior, before installing Sql Server 2005 32 bit.
Hope it may help u !
You won’t get th maximum out of the hardware running a 32bit application on 64 bit hardware and OS