Pocket SMS is a desktop SMS Manager designed to interface directly with Pocket PC or Smartphone.
Key features:
Full Backup of All text messages
Chat history by Contact
Send Text Messages from the desktop
Distribution Lists for sending Scheduled text Messages
Folder Management
Telephone a contact
Instructions:
* For Pocket SMS to work you must be connected via Activesync or, for Vista users, Windows Mobile Device Centre 6.1 (or better).
* The software comes in two parts: the desktop Manager and the pocket pc client. You must install the PocketSMS.Cab on your mobile device and the SMSManager.msi on your desktop. this application requires Compact Framework 3.5
* The first time you connect, depending on the performance of your phone and the number of messages in your SMS folders, Pocket SMS can take quite a few minutes to “look” as if it’s working ….. be patient.
* Your Contacts can be downloaded by using File\Synchronise Contacts.
* You can view all the contacts by double clicking on “Contacts” in the view.
* You can create as many Distribution Lists as you like and Lists can contain more lists or people. You can drag and drop people or messages into any list.
If you have used previous version then copy your original sms.xml and contacts.xml files to the new program directory on your desktop before you run the application the first time.
Source : 
xda-developers.com
Tony
Twimagic
Andrew Chobaniuk
Emiel Zuurbier
MrVamosMuchachos
Skypirate
DeeDee
Dlanor
hg
Sam
{ 2 comments… read them below or add one }
Generally HTC has very limited connectivity options and access from PC to mobile.
Working great on vista and HTC Touch HD!!