Systems Management

Since this regkey resides in the HKEY_CURRENT_USER part of the registry if you apply these settings with a batch file the changes will only apply to that current user. The best way would be to apply via GPO if possible since that will apply to all memebers of the machine. 

If you really needed or wanted to do it via batch file it'd have to be set as a startup item for all users so the batch file runs each time a user logs in to make that all users of that comptuter get the settings in their respective HKCU in the registry.

The best way to do that would be copy and paste what you have listed above and save it is a  .reg file then make batch file to go along with it, in the batch:

@echo off

regedit.exe /s "nameofreg.reg"

I would use GPO for this. If you do want to use a script I would look into Active Setup to ensure every user received this. 

http://itninja.com/blog/view/appdeploy-articles-activesetup

You could use an AutoIT script to do this - it would deploy as an executable so you would just upload that to the K1000 script's dependencies.  Here's what I used for our remote machines to turn proxy settings on and off depending on whether they were on our network or not - tweak to suit your own needs.

Hope that helps!

John

__________________________

#NoTrayIcon ; Hides tray icon
; Ping first proxy server then set it if pingable
;=====================================================================
If Ping("192.168.0.15") Then
RegWrite("HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\" & _
"Internet Settings","ProxyEnable","REG_DWORD",1)
RegWrite("HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\" & _
"Internet Settings","ProxyServer","REG_SZ","192.168.0.15:3128")
RegWrite("HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\" & _
"Internet Settings","ProxyOverride","REG_SZ","<local>")
; Disable proxy settings if no proxy server is reachable
;=====================================================================
Else
RegWrite("HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\" & _
"Internet Settings","ProxyEnable","REG_DWORD",0)
EndIf
Run("C:\Program Files\Internet Explorer\IEXPLORE.EXE") ; Run Internet Explorer

I would use a Group Policy for this, especially if you are already using one.  There are options in the GPO to also disable the user from changing the settings, it is just found in a different section than where you actually specify the proxy configuration.  If you try to specify the settings through a script and do not modify your GPO to stop pushing it's settings, the proxy settings will revert back to what is specified in the GPO over and over again.

Disable changing proxy settings:
http://technet.microsoft.com/en-us/library/cc960614.aspx

If you want to enforce this for FireFox as well, check out the FireFox ADM that can be imported into your existing GPO to control FireFox settings at https://addons.mozilla.org/en-us/firefox/addon/gpo-for-firefox/ or http://sourceforge.net/projects/firefoxadm/.

You can script reg changes through KSCRIPT as well. 

http://itninja.com/blog/view/k1000-script-to-disable-ie-10-upgrade