The value for the home page is stored in the registry.
In the registry
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
“Start Page”=”http://www.stackoverflow.com/”
With a command
REG ADD “HKCU\Software\Microsoft\Internet Explorer\Main” /V “Start Page” /D “http://www.eddiejackson.net/” /F
Scripted
@echo off
set key=”HKCU\Software\Microsoft\Internet Explorer\Main”
set value=”http://eddiejackson.net/”
set data=”%1″
reg.exe add “%key%” /v “%value%” /d “%data%” /f