[HD2 Windows Mobile 6.5 ROM Development] HD2Owner:
the red key was in operator-package rgu. maybe it's related to location search.

[HKEY_CURRENT_USER\Software\HTC\Manila]

"Internet.DisableSearch"=dword:00000001

"Internet.EnableMyLocation"=dword:1

"Internet.SearchURL"=""

"Internet.IsLocationSupportURL"=dword:0

"Internet.EnableSearchChange"=dword:0

reg-keys of 1.36 hd mini rom:

[HKEY_CURRENT_USER\Software\HTC\Manila]

"Internet.CountOfPush"=dword:A

"DefaultBrowserIsIE"=dword:1

"Internet.BannerImage"="\\Windows\\HTC\\Internet\\Assets\\Images\\InternetPortal\\_COM_banner.png"

"Internet.BannerImageWidth"=dword:140

"Internet.BannerImageHeight"=dword:64

"Internet.HideBannerURL"=dword:1

"Internet.EnableMyLocation"=dword:0

"Internet.SearchURL"=""

"Internet.IsLocationSupportURL"=dword:0

hd mini 1.36 internet_pages.xml:

<Manila>
<Navigation>
<PageGroup Name="Root"/>
</Navigation>
<DialogManager>
<DialogGroup Name="Dialogs">
<SimpleDialog Name="internet_add_remove.dialog" PackageName="HTC">
<ComponentReference Name="dialogItem" Mode9Path="HTC\Common\simpledialog.mode9" Component="SimpleDialog" SmartComponent="true"/>
<DialogItem Name="Menu">
<DialogItem Name="Add" Title="[[IDS_INTERNET_MENU_ADD]]"/>
<DialogItem Name="Remove" Title="[[IDS_INTERNET_MENU_REMOVE]]"/>
</DialogItem>
[COLOR="Red"]	</SimpleDialog>
<SimpleDialog Name="internet_add_remove_location_disable.dialog" PackageName="HTC">
<ComponentReference Name="dialogItem" Mode9Path="HTC\Common\simpledialog.mode9" Component="SimpleDialog" SmartComponent="true"/>
<DialogItem Name="Menu">
<DialogItem Name="Add" Title="[[IDS_INTERNET_MENU_ADD]]"/>
<DialogItem Name="Remove" Title="[[IDS_INTERNET_MENU_REMOVE]]"/>
<DialogItem Name="Location" Title="[[IDS_INTERNET_MENU_LOCATION_ENABLE]]"/>
</DialogItem>
</SimpleDialog>
<SimpleDialog Name="internet_add_remove_location_enable.dialog" PackageName="HTC">
<ComponentReference Name="dialogItem" Mode9Path="HTC\Common\simpledialog.mode9" Component="SimpleDialog" SmartComponent="true"/>
<DialogItem Name="Menu">
<DialogItem Name="Add" Title="[[IDS_INTERNET_MENU_ADD]]"/>
<DialogItem Name="Remove" Title="[[IDS_INTERNET_MENU_REMOVE]]"/>
<DialogItem Name="Location" Title="[[IDS_INTERNET_MENU_LOCATION_DISABLE]]"/>
</DialogItem>
</SimpleDialog>[/COLOR]
<SimpleDialog Name="internet_add_remove_search_cmcc.dialog" PackageName="HTC">
<ComponentReference Name="dialogItem" Mode9Path="HTC\Common\simpledialog.mode9" Component="SimpleDialog" SmartComponent="true"/>
<DialogItem Name="Menu">
<DialogItem Name="Add" Title="[[IDS_INTERNET_MENU_ADD]]"/>
<DialogItem Name="Remove" Title="[[IDS_INTERNET_MENU_REMOVE]]"/>
<DialogItem Name="Search" Title="[[IDS_INTERNET_MENU_CHANGESEARCH]]">
<DialogItem Name="CMCC" Title="[[IDS_INTERNET_MENU_CMCC]]"/>
<DialogItem Name="Google" Title="[[IDS_INTERNET_MENU_GOOGLE]]"/>
<DialogItem Name="Baidu" Title="[[IDS_INTERNET_MENU_BAIDU]]"/>
</DialogItem>
</DialogItem>
</SimpleDialog>
[COLOR="Red"]	<SimpleDialog Name="internet_add_remove_search_cmcc_location_enable.dialog" PackageName="HTC">
<ComponentReference Name="dialogItem" Mode9Path="HTC\Common\simpledialog.mode9" Component="SimpleDialog" SmartComponent="true"/>
<DialogItem Name="Menu">
<DialogItem Name="Add" Title="[[IDS_INTERNET_MENU_ADD]]"/>
<DialogItem Name="Remove" Title="[[IDS_INTERNET_MENU_REMOVE]]"/>
<DialogItem Name="Search" Title="[[IDS_INTERNET_MENU_CHANGESEARCH]]">
<DialogItem Name="CMCC" Title="[[IDS_INTERNET_MENU_CMCC]]"/>
<DialogItem Name="Google" Title="[[IDS_INTERNET_MENU_GOOGLE]]"/>
<DialogItem Name="Baidu" Title="[[IDS_INTERNET_MENU_BAIDU]]"/>
</DialogItem>
<DialogItem Name="Location" Title="[[IDS_INTERNET_MENU_LOCATION_DISABLE]]"/>
</DialogItem>
</SimpleDialog>
<SimpleDialog Name="internet_add_remove_search_cmcc_location_disable.dialog" PackageName="HTC">
<ComponentReference Name="dialogItem" Mode9Path="HTC\Common\simpledialog.mode9" Component="SimpleDialog" SmartComponent="true"/>
<DialogItem Name="Menu">
<DialogItem Name="Add" Title="[[IDS_INTERNET_MENU_ADD]]"/>
<DialogItem Name="Remove" Title="[[IDS_INTERNET_MENU_REMOVE]]"/>
<DialogItem Name="Search" Title="[[IDS_INTERNET_MENU_CHANGESEARCH]]">
<DialogItem Name="CMCC" Title="[[IDS_INTERNET_MENU_CMCC]]"/>
<DialogItem Name="Google" Title="[[IDS_INTERNET_MENU_GOOGLE]]"/>
<DialogItem Name="Baidu" Title="[[IDS_INTERNET_MENU_BAIDU]]"/>
</DialogItem>
<DialogItem Name="Location" Title="[[IDS_INTERNET_MENU_LOCATION_ENABLE]]"/>
</DialogItem>
</SimpleDialog>[/COLOR]
</DialogGroup>
</DialogManager>
</Manila>

edit:

red key completely disables search bar.. maybe it gets replaced by the location search bar...

htc geo service find in this rom:

[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\HTCGeoService]

"TimeOut4GetCityName"=dword:00002710 (key is not inside 2.13 rom for example)