[Windows Mobile Apps and Games] l3v5y:
I have a set of registry entries in the OEM package that look like:

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\UIPlugins\{DAD087AB-1E2F-4b3b-BB5F-0F4D6AB630F8}]
"Capabilities"=dword:00000001
"Description"="HTC WMP Plug-in Today"
"FriendlyName"="HTC WMP Plug-in Today"

[HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\Extensions\Controls Folder\Today\shellex\PropertySheetHandlers\{FFBC68B0-F57E-420f-8B53-BBBC6855AC73}]
@=""

[HKEY_CLASSES_ROOT\CLSID\{DAD087AB-1E2F-4b3b-BB5F-0F4D6AB630F8}\InprocServer32]
@="WmpPluginToday.dll"

[HKEY_LOCAL_MACHINE\Software\Microsoft\Today\Items\HTC Home]
"Enabled"=dword:00000001
"DLL"="HTCHome.dll"
"Order"=dword:00000000
"Flags"=dword:00000000
"Selectability"=dword:00000002
"Type"=dword:00000005
"Options"=dword:00000000

[HKEY_LOCAL_MACHINE\Software\Microsoft\Today]
"Date"=dword:00000000

[HKEY_CLASSES_ROOT\CLSID\{FFBC68B0-F57E-420f-8B53-BBBC6855AC73}]
@="HTC Home Settings"

[HKEY_CLASSES_ROOT\CLSID\{FFBC68B0-F57E-420f-8B53-BBBC6855AC73}\InProcServer32]
"ThreadingModel"="Free"
@="HTCHomeSettings.dll"

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome]
"TabSetting"="1,2,3,4,5"

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Weather\Settings]
"ConnectionTimeout"=dword:0000003c
"Celsius"=dword:00000001

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\0]
"Type"=dword:1
"Path"="\\Windows\\CommManager.exe"

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\1]
"Type"=dword:1
"Path"="\\Extended_ROM\\Launcher.exe"

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\2]
"Type"=dword:5

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\3]
"Type"=dword:3

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\4]
"Type"=dword:1
"Path"="\\Windows\\SuperBright.lnk"

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\5]
"Type"=dword:1
"Path"="\\Windows\\regedit.lnk"

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\6]
"Type"=dword:4

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\7]
"Type"=dword:0

[HKEY_LOCAL_MACHINE\Software\HTC\HTCHome\Launcher\8]
"Type"=dword:0

[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\Music Plug-In]
"MusicPlayer"=dword:00000002

[HKEY_LOCAL_MACHINE\Software\OEM\MASD]
"HTCHome"="2_0_814722_0"
"Music Plug-In"="1_0_227714_0"

[HKEY_LOCAL_MACHINE\SOFTWARE\HTC]
"SliderOutRotateAngle"=dword:0000010e

[HKEY_LOCAL_MACHINE\Software\Microsoft\Color]
"SHColor"=hex:ff,00,00,00,00,00,00,00,dd,dd,dd,00,ff,ff,cc,00,ff,ff,ff,00,82,82,82,00,82,82,82,00,de,de,de,00,74,74,74,00,ff,ff,ff,00,74,74,74,00,74,74,74,00,74,74,74,00,82,82,82,00,74,74,74,00,ff,ff,ff,00,de,de,de,00,9d,9d,9d,00,9d,9d,9d,00,ff,ff,ff,00,82,82,82,00,74,74,74,00,ff,ff,ff,00,82,82,82,00,84,84,c3,00,82,82,82,00,74,74,74,00,ff,ff,ff,00,ff,ff,ff,00,00,00,00,00,ff,ff,ff,00,00,00,00,00,ff,ff,ff,00,82,82,82,00,9d,9d,9d,00,ff,ff,ff,00,ff,ff,ff,00,de,de,de,00,74,74,74,00,ff,ff,ff,00,74,74,74,00
"BaseHue"=dword:000000A0
"40"=hex:c0,c0,c0,00
"39"=hex:ff,ff,ff,00
"38"=hex:c2,06,05,00
"37"=hex:ef,ef,ef,00
"36"=hex:ff,ff,ff,00
"28"=hex:ff,ff,ff,00
"27"=hex:ff,ff,ff,00
"26"=hex:ec,06,06,00
"25"=hex:c2,06,05,00
"16"=hex:ef,ef,ef,00
"15"=hex:ff,ff,ff,00
"14"=hex:2f,2f,2f,00
"13"=hex:6f,6f,6f,00
"12"=hex:50,50,50,00
"11"=hex:2f,5c,77,00
"7"=hex:4f,4f,4f,00
"6"=hex:6e,6e,6e,00
"4"=hex:ff,ff,ff,00
"DefSHColor"=hex:ff,00,00,00,00,00,00,00,dd,dd,dd,00,ff,ff,cc,00,ff,ff,ff,00,15,af,bc,00,15,af,bc,00,c9,e7,e9,00,14,9c,a7,00,ff,ff,ff,00,14,9c,a7,00,14,9c,a7,00,14,9c,a7,00,15,af,bc,00,14,9c,a7,00,ff,ff,ff,00,c9,e7,e9,00,37,c7,d3,00,37,c7,d3,00,ff,ff,ff,00,00,b7,c9,00,14,9c,a7,00,ff,ff,ff,00,15,af,bc,00,84,84,c3,00,15,af,bc,00,14,9c,a7,00,ff,ff,ff,00,ff,ff,ff,00,00,00,00,00,ff,ff,ff,00,00,00,00,00,ff,ff,ff,00,2e,44,4f,00,00,14,3c,00,00,f0,ff,00,ff,ff,ff,00,c9,e7,e9,00,14,9c,a7,00,ff,ff,ff,00,14,9c,a7,00
"Restriction"=dword:00000002

Not sure how many of these you'll need, but basically they tell windows there is a home plugin and set all the settings...