your on VZN so the info in post #2 isnt gonna help you. go to START/MESSAGING/SMS,MMS/MENU/PICS,VIDEO OPTIONS/SERVERS/ click on servers and you should have
(server name)Verizon wireless
(gateway) blank
(port number) 80
(server addy)
http://mms.vtext.com/servlets/mms
(connect via) the internet
(send limit) 500k.
IF you cant edit the server(click on verizon wireless under servers you will need to do a reg edit. if you search you will find what needs to be edited, i cant remember the exact edit off the top of my head.