M-x package-install w32-registry
This module provides functions to read the Windows registry, by
parsing the output of the reg.exe command-line tool and formatting it
into something a lisp program can understand.
Also, there are convenience functions to read well-known registry
values. Well, there's one anyway.
- `w32reg-get-ie-proxy-config' is suitable for setting
url-proxy-services, which is used by the `url.el' package.
I will add more of these convenience functions later.