EDIT: Did some messing around and found out that I can send mms from windows program by:
1: Opening the picture in the album
2: Clicking the picture to access option bar
3: Selecting send/mail/distribute/etc on the options bar
4: Selecting "mail"
5: Selecting "Picture Message"
(This is for Verizon, after changing the mms server settings as per page 1)
This sends the picture fine and I know for a fact the attempted recipients have received the pictures I've sent. For some reason I get a copy of the message in my htc messaging inbox with the address "@", however, this is a small price to pay for working sending and receiving mms on Juicy's R10

. Sorry for the long post, but I'm sure I won't be the only one searching for this.
ORIGINAL POST: I'm currently running Juicy's R10 (sense 2.5) and had a friend of mine send me a picture after setting up the verizon mms server as suggested and it worked flawlessly. However, I then tried sending and it attempts to send for a time before notifying me that the message could not be sent. I've searched and can't find anyone with this issue.
Everyone says verizon mms works fine on 2.5 roms?