Thanks to jaydisc for this hack.

Downloads:
I cant host these files due to legal reasons and please dont email requesting them.
You need to either own a T3, know someone with a T3 or go to the store with a memory card and copy them off yourself in which case I and the author am void of responsibility.

Required Programs:
CodeDriver - To activate the programs fullscreen
FileZ - To copy the files from the T3

The following is an updated (and much more thorough) version written by jaydisc
THANKS J!

OK. Research is done!!!

New PIM Features

Woo hoo! I've finally completed my mission in obtaining all of the new software functionality from the new T3 and/or TE. Here's how:

Here are the files required from a T3/TE ROM:

Address Book.prc
Address Book_enUS.prc
Calendar-PDat.prc
Calendar-PDat_enUS.prc
ConnectLib-cctL.prc
ConnectLib-cctL_enUS.prc
Contacts-PAdd.prc
Contacts-PAdd_enUS.prc
Date & Time.prc
Date & Time_enUS.prc
Date Book.prc
Date Book_enUS.prc
DateBookAgendaBG-PDat.prc
Memo Pad.prc
Memo Pad_enUS.prc
Memos-PMem.prc
Memos-PMem_enUS.prc
Note Pad.prc
Note Pad_enUS.prc
PIMsSupport-pdmE.prc
Tasks-PTod.prc
Tasks-PTod_enUS.prc
To Do List.prc
To Do List_enUS.prc

You'll notice the original four apps and their overlays, the four new apps and their overlays, plus PIMsSupport and ConnectLib. These last two files are the missing links.

The original four apps act like stump or conduits. They hide the original ROM apps and they act as a conduit (true meaning of the word) to the new apps.

PIMsSupport is what enables this communication between the new apps and anything else that talks to them via the old apps (like Palm Conduits or 3rd party PIM apps).

ConnectLib enables one of my favorite features, Quick Connect, in the new Contacts (Address Book). Earlier TT and TC users will recognize, and if like myself, require it. It is not required unless you want this feature.

So, install all of those after a hard reset and then perform a soft reset to enable them BEFORE you hotsync your PIM data back onto the device. The presence of these files ensures hotsynced data goes to the right places.

Lastly, to get full dialing, SMS, enhanced Quick Connect and other phone capabilities, install these files (I got my copies from my Tungsten E software CD):

ATPhoneDriver.prc
ATPhoneDriver_enUS.prc
Dial.prc
Dial_enUS.prc
dialer.prc
dialer_enus.prc
EricssonT39m.prc
EricssonT68.prc
MoHiSp1Lib.prc
MotorolaTP280i.prc
NMSCPT.prc
Nokia6310i.prc
PhoneLib.prc
PhoneLib_enUS.prc
PhoneLink.prc
phonelink_enus.prc
PhonePnl.prc
PhonePnl_enUS.prc
PMHDB.pdb
PMNDB.pdb
SerialPhoneTask.prc
SerialPhoneTask_enUS.prc
SmsLib.prc
SmsLib_enUS.prc
SmsMessenger.prc
SmsMessenger_enUS.prc
Sony-ET68i.prc
StdGSMDriver.prc
StdGSMDriver_enUS.prc

Lastly, if you want VersaMail info to show up in the new Calendar agenda view, you need VersaMail 2.6 (I also got from TE CD):

BGService.prc
MMConduit.prc
MMConfigFPI.prc
MMHtmlPlugin.prc
MMMailTo.prc
MMNotify.prc
MMPluginMGR.prc
MMPRCPlugin.prc
MMSDCard.prc
MMSmartAdd.prc
MMTextPlugin.prc
MMUnzipPlugin.prc
MMUpgrade.prc
MMVCal.prc
MMVCardPlugin.prc
MMWave.prc
MMWizard.prc
MMWordPlugin.prc
MultiMail.prc
PalmSGHiResFonts.pdb
PalmSGLowResFonts.pdb

I noticed differences in ALL of the VersaMail files above, compared to their counterparts in my TC's ROM. Even still, I still left out installing the fonts, as they were in ROM, and don't invision any trouble using the originals.

Warranty: Do this at your own risk. Don't even THINK about holding me responsible or "requiring" my help if something goes wrong.

Legal: As the owner of both a TC & TE, I feel I am in the right tinkering with this kind of stuff. If someone deems otherwise, or a moderator of this board doesn't feel this info is fit here, please let me know and I'll remove it.

Cheers!