Run regedit to open the registry. The options for the ie homepage are as follows:
Name: IE search page
Registry path: HKLM \ Software \ Microsoft \ Internet Explorer \ Main
Registry name: Search Page
Name: Details page of the IE start page
Registry path: HKLM \ Software \ Microsoft \ Internet Explorer \ Main
Registry name: Default_Page_URL
Name: IE default search page
Registry path: HKLM \ Software \ Microsoft \ Internet Explorer \ Main
Registry name: Default_Search_URL
Name: IE search page
Registry path: HKCU \ Software \ Microsoft \ Internet Explorer \ Main
Registry name: Search Page
Name: blank page specified by the IE user
Registry path: HKCU \ Software \ Microsoft \ Internet Explorer \ Main
Registry name: Local Page
Name: OpenHomePage Command Line Parameter
Registry path: HKCR \ CLSID \ {871c5316-42a0-1069-a2ea-08002b30309d} \ shell \ OpenHomePage \ Command
Registry name: (Default)
Name: Home Page
CLSID: {1fba04ee-3024-11d2-8f1f-440f87abd16}
Registry path: HKLM \ SOFTWARE \ Microsoft \ Internet Explorer \ Extensions \ {C18CB140-0BBB-11D4-8FE8-0088CC102439}
Name: practical query
CLSID: {1fba04ee-3024-11d2-8f1f-440f87abd16}
Registry path: HKLM \ SOFTWARE \ Microsoft \ Internet Explorer \ Extensions \ {C18CB140-0BBB-11D4-8FE8-0088CC102438}
From Simphy's Linux Blog