The 32-bit IE was your default browser unless you changed it. Unfortunately
when you are in a 64-bit program (like Windows Mail) it will launch a 64-bit
version of IE.
I don't know how I changed it because I don't believe I ever did change it.
But if I select Internet Explorer from the Start Menu's Internet item, it'll
launch the 64-bit IE. If I set my default email to Windows Live Mail, it'll
open in the 64-bit IE, etc. All programs opening a web page will open 64-bit
IE. I guess it's just another annoyance I have to deal with until Adobe gets
their act together.
You should have had both the 32-bit and 64-bit IE available on the start
menu. You can easily go to the 32-bit IE and create a shortcut and send it
directly to the start menu or quick launch, or make one and drag and drop it
wherever you want it. As I said in my prior post, from a 64-bit program you
will launch the 64-bit version.