Found the fix for MMS Sending...
1. Make sure you're using Megapinky's latest Sense 2.5 2011 cab
2. Install the "MMS Fix (M2.5)(Verizon)(Valkyrie).cab" (attached)
3. Soft reset
4. Go into Messaging Tab>All Messages>Menu>Settings>Options>Menu>MMS Server and verify the following settings under the VZW choice:
-Server name: VZW
-IP address: leave blank
-Port number: 80
- Server is
http://mms.vtext.com/servlets/mms?X-VZW-MDN=5555555555 (where the 10 5's are your 10 digit phone number...notice no dashes)
-Connect via: Verizon Wireless
-Send limit: 1024kb
-WAP version: None (THIS IS VERY IMPORTANT)
5. Soft reset
I have confirmed that SMS and MMS work, both sending and receiving. Enjoy!