There aren't any MMS settings saved in Arcsoft. Here's the Verizon settings:
Gateway: <leave blank>
Port: 9201
Server Address:
http://mms.vzw.com/servlets/
Connect via: Verizon Wireless
Sending Size limit: 250K
WAP Version: 2.0
It's also been said that if you *228 and press one (?) that it will automatically set your MMS and Wap settings. Don't know how true that is though