Actually, this registry changed worked for me

Increase Font Cache
HKLM/System/GDI/GLYPHCACHE/limit: 8192 => 16384

Increase File System Cache
HKLM\System\StorageManager\FATFS/CacheSize: 0 => 4096

Increase File System Filter Cache
HKLM/System/StorageManager/filters/fsreplxfilt\ReplStoreCacheSize: 0 => 4096

Disable menu animation
HKLM/System/GWE/MENU/antitype: 6 => 0

Disable window animation
HKLM\System\GWE\Animate: 1 => 0

Move Temporary Internet Files to Storage Card
HKCU\Software\Microsoft\Windows\CurrentVersion\Exp lorer\Shell Folders\Cache:
\Windows\Profiles\guest\Temporary Internet Files => Storage Card/Temporary Internet Files

Removing today screen tray
\HKLM\init\Launch92: Delete

Remove Sim Contacts
HKCU\ControlPanel\Phone\ShowSim: 1 => 0

Remove or modify the startup jingle on a soft boot
HKLM\SOFTWARE\HTC\StartupAnimation/Enabled: 1 => 0

Increase Keyboard Backlight Time
HKCU/Control Panel/Backlight/KeyLightTimeout: 30 => 90

Change Thickness of Scrollbars
(horizontal) HKLM\System\GWE\cyHScr: 13 => 9
(vertical) HKLM\System\GWE\cxVScr: 13 => 9

Change the length of scrollbar arrow buttons
(horizontal) HKLM\System\GWE\cyVScr: 20 => 9
(vertical) HKLM\System\GWE\cxHScr: 20 => 9

Disable Video Size Limit
HKLM/Software/HTC/camera/P3/EnableRecLimit: 1 => 0

Allow Ringtones from Micro SD Card
HKCU/ControlPanel/SoundCategories/Ring/Directory:
\Windows\ => \Storage Card\

Suggest More Words
HKCU/ControlPanel/Sip/SuggWords: 4 => 6

Show Tomorrow's Appointments on Calendar Today item
HKLM\Software\Microsoft\Today\Items\”Calendar”\Fla gs:
1 =>
0 = Show Upcoming Appointments
1 = Show Upcoming Appointments and today's "All Day" event
2 = Show Next Appointment
3 = Show Next Appointment and today's "All Day" event
4 = see tomorrow's Appointments on the Calendar Today item WITHOUT today's All Day event
5 = see tomorrow's Appointments on the Calendar Today item WITH today's All Day event

Improve Speakerphone
HKLM/Software/HTC/AUDIOGAIN/EARPHONE_UPLINK_VOLUME: 19 => CC
HKLM/Software/HTC/AUDIOGAIN/RECEIVE_UPLINK_VOLUME: 00 => CC

(i don't know if the above works...i can't personally tell...i just left mine at default after trying it out...can someone CONFIRM IF THIS WORKS???)

Customize Startup Programs
HKLM/Software/Microsoft/Shell/Start Items or Shell/Extensions/NewMenu

Hard Reset
Press both soft keys and insert stylus into soft reset button and press.
Release the soft reset button and keep pressing the soft keys.
When the "This operation will delete all your personal data, to manufacturer default" appears on screen.
Press Green call button to restore manufacturer default, or press other keys to cancel.


Removing today screen tray
\HKLM\init\Launch92: Delete (old value TrayAp.exe)