links to the PHM Regedit as below:
http://www.phm.lu/Products/PocketPC/RegEdit/
Since i'm sharing this link..might as well share with u all some registry hack that i learned from the other forums that i've been through 

Install directory to your storage/storage card. To install your application/program to storage memory or storage card memory. Whenever you are about to install, there will one screen appear to ask you where to install the program. But not to forget to change it back the default value to 0 after the installation or u might encounter weird situation when you want to change your today screen and etc..
HKEY_LOCAL_MACHINE\Software\Apps\Microsoft Application Installer
Default: 0
Changed: 1

Fast graphic but consume memory
It can fasten and smoothen your OS graphic movement, but it will eat some of your program memory, not that much. You also can change it to 32768 instead of 16384 for greater result.
HKEY_LOCAL_MACHINE\System\GDI\GLYPHCACHE
Default: 8192
Changed: 16384

To hide screen rotate icon There is a small PDA icon at your bottom right corner of your screen to change ur screen orientation from patriot to landscape and other way round. For me, its unnecessary, so you can hide it.
HKEY_LOCAL_MACHINE\Service\ScreenRotate
ShowIcon value change to 0
Default: 1
Changed: 0

To turn off flashing LEDs and Vibration
It will turn off the blinking green/red/orange LED and the vibration mode. Some people will irritate by the blinking, especially when you're driving and sleep at night.
HKEY_LOCAL_MACHINE\Drivers\Builtin\AllLEDMgr
Default: 1
Changed: 0

Enable camera frame rate display
Camera frame rate will appear on the screen when u're using the camera
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\CAMERA\AppDefSettings\General
Default: 0
Changed: 1

To set ur ringstones to run from Storage Card
Place all your downloaded ringtones from internal memory to storage card. Usefull for our small/ciput Mini memory.
HKEY_CURRENT_USER\ControlPanel\SoundCategories\Ring\Directory registry key
Default value: "\Windows\Rings\"
Change it to: "\Storage Card\<your preferred directory>\" (Note that "\" at the end is extremely important!!!)
Place those ringtones into \Storage Card\<your preferred directory>\

Enable hidden editor function in Album
This opens the additional hidden function in the ALBUM, allows u to edit ur photo, brightness, contrast, crop, etc. Album (opens Editor menu):
HKEY_LOCAL_MACHINE/SOFTWARE/HTC/Album/Disable Editor
Disable value changed to: 0

Unlimited 3gp Recording for mms settings
This will allow you to take unlimited recording time
HKEY_LOCAL_MACHINE \ SOFTWARE\HTC\camera\AppDefSettings\P3
DWord Value called "EnableLimit", change it from 1 to 0.

To include both time and date in taskbar
You'll get time and short date on your right top of the screen, rather just displaying time. Meaning, you can remove your date item on your today screen. 
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shell\
Create a binary value named "TBOpt" and set its value to "13 00 00 00".
Soft-reset
Note: If u ever get bored of the date display, rid it by deleting the TBOpt key.
Phase 2: IF U NEED THE CHANGE THE DATE FORMAT:
i) Just go to Settings>Regional Settings>Date>Short Date
ii) Choose "dd-MMMM-yy" or whichever format u prefer.
iii) Click "ok".

Disabling "Message Sent" notification bubble
For those who hates the "Message Sent" notification after sending an SMS, this is the steps to remove the bubble notification...this is the STEP by STEP method to do it in case some of you guys dont get it right...
First, you will need to download a Registry Editor to help you do it...
using the Registry Editor, navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Inbox
Next, click on Inbox (make sure the Inbox is highlighted) and select Edit, New Key
Name the New Key as "Settings"
Click on "Settings" (make sure the Settings is highlighted) and select Edit, New String Value
On "Value name:", key in SMSNoSentMsg and in "Value data", key in 1
Soft reset your device and test it with one SMS, and you will notice that the SMS Sent bubble is being disabled

Audio Tweak
Audio Tweak enhances the speaker performance of the O2 Mini (some devices have this set to a lesser priority and by using this you get better sound, if your device is already set to a high level you have no need for this)
HKEY_LOCAL_MACHINE\Drivers\BuiltIn\WaveDev\Priority256
Default: 110
Changed to: 80

Disable start menu animation This tweaking will eliminate the list of menu "drop-down animation" if u tab on Start/Flag icon.
HKEY_LOCAL_MACHINE\SYSTEM\GWE\Menu\
AniType value change from 6 to 0.

SMS Notification On
This is different with message notification send, this will confirm you when message already recieve by receiver
[HKEY_CURRENT_USER\Software\Microsoft\Inbox\Settings]
SMSDeliveryNotify = dword:00000001 ->0 if off
How to:
Create new Dword value name SMSDeliveryNotify
with decimal value data 1
Wacth for capital letter

Changing the Message Sent Notification Message
Change the default "MessageSent". Example "Pesan sudah di kirim"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Inbox\Svc\SMS]
Change the Value "MessageSent" to whatever you like.

NOTES
1. Please inform if there are errors.
2. PLEASE FOLLOW INSTRUCTION to avoid trouble.
3. I/We are not responsible for any damages to your device.
4 Please soft-reset everytime you change the value to see the effect.

i heard this phone got many problem ?? Is it true ??

The OS always hangs ?? Sometimes lag ?

Penny, i saw LAST 3 month u BARU bought ur mini, but now y u want to sell ??? RM 1500 get from you ?

DAVID,
u maybe put .WAV files into ur WINDOWS\ folder,
change it from control panel, sound & notifications \ Alarm !
ok !

Whoa Shiok!

Looks nice, but then is it selling cheaper somewhere else? Looks like it can definetly take a beating...and protect "The Precious"...(Sounding Like Golem)

Where in Lowyatt did u say you bought it again? Pls explain as IM not familiar with the layout of LowYatt....

Thnx