File associations and MIME types

[Guest]

Let's say for example that I have a .zip file that I want to rename to some
other random extension (I'll now call it a .abc file), and I want windows to
handle .abc files just like .zip files, using zipfldr.dll. How can I do this
in Vista? In XP (and all previous Windows from what I remember), when you
went into the list of File Types (which is now under Default Programs), you
could add a new file extension, then select a MIME type to treat the file as.
All Vista seems to let you do is select a program.

(Please don't respond to this post by saying "Just go into Default
Programs... it's easier now". That's all I've been able to find on this
subject so far.)

 

[Guest]

What I've done for this, is change the extention, then right click and go to
properties.
It lists the type of file and opens with. Here I select change and browse to
the
file I want to use.

 

[Guest]

Yes, that brings up a list of *programs* that you can choose from. Windows
handles zip files with zipfldr.dll, a dynamic link library that can't be
called as a program. I guess my real question is how do I call zipfldr.dll
for any other file type that I want. It was easy to do under previous
versions of Windows, but there seems to be no way to do it now.