Setting 32-bit x86 build target in Visual C# 2008 Express Edition?

I'm building a C# application that loads a 32-bit COM dll. The compiled application runs fine on 32-bit Windows but barfs on 64 bit Windows because it can't load the 32-bit COM. Is there a way to set a 32-bit build target in VC# 2008 Express Edition?

Alternatively, is there a way to force a .NET application compiled to the AnyCPU build target to run in 32-bit mode on 64-bit Windows?