Back on May 1st, 2004 I posted about 32-bit apps on 64-bit Windows and added some links to the post.
Today, Thursday, July 24, 2008 12:02 PM, Jim left the comment "It would be nice if the links to the references were valid."
Well, I would not expect many of the links to work anymore but none is. On the other hand, over 4 years have gone by since that post. What can you expect?
Well, here you go Jim.
MSDN: WOW64 Implementation Details
MSDN: Running 32-bit Applications
AMD: WOWing Your 32-Bit Applications with 64-Bit Windows Part 1
AMD: WOWing Your 32-Bit Applications with 64-Bit Windows, Part 2
Intel: Getting Software Ready for Intel® Itanium® Architecture
Intel: IA-32 Execution Layer (EL)
BTW, if you are interested in 64-bit development on Windows, here's a bunch of PDFs I once put together.