How to change default of password checkbox?

When you connect to a shared resource on a Win9x peer-to-peer network, the "Enter Network Password" dialog box pops up. Including a checkbox labelled "Save this password in your password list". By default this checkbox is "Checked" (which IMHO is an annoyance). I want to change the default to "Unchecked", without losing the box altogether.

I've hunted through the Registry and the Internet, but can't seem to find a place to toggle this setting.

QUESTION 1: who knows of an (undocumented) setting in the Registry to achieve this??

Next, I'd attempt a hack to change the default from "checked" to "unchecked".
This usually can be done through programs like "Resource Hacker" (32-bits resources only) or eXeScope.

The only DLL I can find containing the text "Save this password in your passsword list" is Nddeapi.dll (16-bits).
This DLL indeed includes the "Enter Network Password" dialog box, but not the default setting, which apparently is done from another file or application.

So far I've been unable to find out where/how the default "checked" is set.

QUESTION 2: which EXE or DLL controls this setting?? And how the default be hacked??

Any help or suggestions are highly appreciated.

Thank you!

- Hans Spoor