[HD2 Windows Mobile 6.5 ROM Development] mr.vandalay:
here's Da_G's very informative post

original thread HERE

* Package Descriptions

*note: in the case of *Modules vs. *Files, the difference is simply what area of memory these objects go to when loaded (FILES or MODULES section) - other than that, no difference. Essentially, if you're using a native 6.5 kernel, you want *Modules, otherwise not.

ADC - Automatic Data Configuration

AdobeFlash - Adobe Flash

AdobeFlashCodecs - Adobe Flash Video Playback Codecs

AlarmSounds - Alarm Sounds

AUTOUPDATE - Device-Side Auto Update - Not Required

Base - Required - but what is it?

BaseApps - Required - but what is it?

BaseAppsFiles - Microsoft Camera + Camera Integration Support - replaces BaseAppsModules

BaseAppsModules - Microsoft Camera + Camera Integration Support -replaces BaseAppsFiles

Bluetooth - Bluetooth Support (for microsoft BT stack, dependant on build-time switch)

bronze - Required - Components for CHome

BronzeEA - Components for CHome (east-asia languages)

BronzeNonEA - Components for CHome (Non east-asia languages)

BROWSING - IE 5 Components

BROWSINGCORE - IE 6on6 Scripting Components (dependant on build-time switch)

browsingie - IE 6on6 UI and RenderCore (dependant on build-time switch)

BTDUN - Bluetooth dial-up networking

Bth_A2DP - Bluetooth A2DP

Bth_HID - Bluetooth HID (Human Interface Device) profile support

Bth_Watch - Support for the Sony Erricssion Wrist Watch

CHome - Titanium, the WM Pro version of Sliding Panels

CommonEA - Common settings specific to east asia builds, replaces CommonNonEA

CommonNonEA - Common settings specific to non-east asia builds, replaces CommonEA

COMPLEXSCRIPT_FONTS - System fonts for Arabic builds, replaces SYSTEM_DEFAULT_FONTS

ConfettiCore - HW Accelerated RenderCore for 6.5 Chrome

DRM - Digital Rights Management Support (dependant on build-time switch) - Required for Video playback of 3gp and mp4

Enterprise - IPSec, l2TP and Winscard support?

Entertainment - Games

FWUPDATE - ImageUpdate Support

gb18030 - East Asian Font support - Excluded from non-EA images

GPSID - GPS Intermediate Driver, facilitates multiple applications using one serial port simultaneously

INTERNETSHARING - Provides a NAT Router for WWAN <--> USB/Bluetooth communication

IPSECVPN - IPSec VPN Support

IRDA - IR Port Support

LangDB - wince.nls for your language (0404, 0411, 0412, 0804, WWE)

Livesearch - Windows Live Search/Bing Search

Lockscreen - WM6.5 Lockscreen

LockscreenEA - Lockscreen east-asia components - replaces LockscreenNonEA

LockscreenNonEA - Lockscreen Non east-asia components - replaces LockscreenEA

MediaOS - Windows Media Player - Needed for MP3 Ringtone support?

MediaOSFiles - Windows Mobile Player Decoder DMO - replaces MediaOSModules

MediaOSModules - Windows Mobile Player Decoder DMO - replaces MediaOSFiles

Metadata - Required - Registry Hives, Package Info

MODEMLINK - Old-style internet sharing support (DUN) (dependant on build-time switch)

MSIMAR - SIP support for Arabic builds - excluded from non-arabic builds

MSTag - Microsoft Tag Reader (dependant on build-time switch)

MSXIPKernel - Microsoft Native Kernel Components

MSXIPKernelLTK - Empty ImageUpdate Package - Requirement for future expansion

NetCF - Microsoft .NET Compact Framework

NonPhone - Non-Phone (PDA) Components - excluded from phone builds

OEMXIPKernel - OEM Native Kernel Components

Office - Microsoft Office 6 Mobile

OneNote - Microsoft OneNote 6 Mobile

OS - Required - Description?

OSFiles - Required - MS WMV DMO - replaces OSModules

OSModules - Required - MS WMV DMO - replaces OSFiles

Perf - Debug Performance Monitor

Perfbox - Debug Performance Monitor

Phone - Required - Phone support, not in PDA builds

PhoneRedist - Required - Phone support, not in PDA builds

ppgprov - OMA Provisioning Support, not in PDA builds

Redist - ?

RemoteDesktopMobile - Remote Desktop

Riched20 - Rich HTML Editor support - WWE builds - replaces Riched20_CS

Riched20_CS - Rich HTML Editor support - Arabic builds - replaces Riched20

RIL710MUX - CellCore Component (optional)

RingsAndAlerts - Rings and Alerts

RMGR - Roaming Manager (optional)

RUNTIMES - C Runtimes

SipAR - SIP Support for Arabic builds (excluded from non-arabic builds)

SampleMusic - Sample Music (dependant on build-time switch)

Shell - Required

SIM_TKit - SIM Tool Kit, omitted from CDMA builds

Skybox - Microsoft MyPhone, Syncs a phone's info with Microsoft (dependant on build-time switch)

Skymarket - WM MarketPlace isn't live yet - Just a link (dependant on build-time switch)

SMIME - Required - Crypto Support

SMS_Providers - Required - SMS Support

SQLCE - SQL Server for CE (dependant on build-time switch)

SQM - Systems Quality Metrics (customer experience feedback)

SqlCeMobile - Not Required - Unless you need SqlCeMobile

SYSTEM_DEFAULT_FONTS - Required - Non Complex-Script Font Support - replaces COMPLEXSCRIPT_FONTS

Themes - Extra Themes

Transcriber - Transcriber - Not available in every language

UNISCRIBE - SIP Support for select non-WWE langs - replaces Transcriber

VoiceCommand - Voice Command - (0407, 0409, 040C, 0809)

VoIP - VoIP

VoIPOS - VoIP Part 2

Webview - IE 6on6 RenderCore component for OS use, WWE - replaces Webview_CS

Webview_CS - IE 6on6 RenderCore component for OS use, arabic - replaces Webview

WelcomeCenter - The WM6.5 Welcome Center - Required for "Help"

WindowsLive - Windows Live Mobile

WindowsLiveIM - Windows Live Instant Messaging

WMLiveSearchWidget - MS Live Search Widget

WMMoneyWidget - MS Money Widget

WMWeatherWidget - MS Weather Widget

WMWidgets - MS Widgets Support (Requires IE 6on6)

WWAN - WWAN Support (not in PDA Builds)

this way you know which package you can take out and which one to leave :)