使用Excel 2007（Vista 64位版本）加载32位DLL

I discovered that I can NOT load any 32-bit DLLs using my version of Office 2007. I’m using Vista 64bit and I assume that Office is also in 64-bit mode. Is it possible to start Excel in 32-bit mode Or Is there a way to declare a DLL using VB to load a 32-bit DLL?I discovered that I can NOT load any 32-bit DLL