Programmatically detect system-proxy settings on Windows XP with Python

Question

I develop a critical application used by a multi-national company. Users in offices all around the globe need to be able to install this application.

The application

Answer 1

As far as I know, In a Windows environment, if no proxy environment variables are set, proxy settings are obtained from the registry's Internet Settings section. . Isn't it enough?

Or u can get something useful info from registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyServer

Edit:
sorry for don't know how to format comment's source code, I repost it here.

>>> import win32com.client
>>> js = win32com.client.Dispatch('MSScriptControl.ScriptControl')
>>> js.Language = 'JavaScript'
>>> js.AddCode('function add(a, b) {return a+b;}')
>>> js.Run('add', 1, 2)
3