I've looked into automagically enable/disable network connections before. Heres what I came up with.

First I aimed for the registry, it seems like disable a connection clears the NTEContextList of the interface and reduces a reference count (Yes!) to the interface. Enable it sets a unique hex counter on NTEContextList and increases the reference count. It probably does more that that, so I decided not to fiddle with it.

I decided to go for a solution using the Win32::GuiTest module and emulate a user (Me) doing it.

Here is my code, you'll probably need to modify it to match your icon positions and maybe increase/decrease the sleep values.

#!/usr/bin/perl -w

use strict;
use Win32::GuiTest qw(SetForegroundWindow FindWindowLike GetWindowText
+ SendKeys);
use vars qw(@windows);

#- Check for open ncpa.cpl
@windows = FindWindowLike(0, "Network and Dial-up Connections", "", 0,
+ 1);

#- Close all open ones
for (@windows) {
    SetForegroundWindow($_);
    sleep 1;
    SendKeys("%{F4}");
}

#- Open a new one
system ("cmd /c start ncpa.cpl");
sleep 2;
@windows = FindWindowLike(0, "Network and Dial-up Connections", "", 0,
+ 1);
SetForegroundWindow($windows[0]);
sleep 1;

#- Now, navigate to the icon you want with right arrow keys
#- Mine is the second icon so I need only one keystroke
SendKeys("{RIGHT}");

#- Open the right klick menu and press enable/disable
SendKeys("+{F10}{DOWN}~");

#- Wait a while (enabling takes some time)
sleep 15;

#- Close window
SendKeys("%{F4}");
[download]

Good luck,

/brother t0mas