Got round to resetting my fMMS settings so I could send & recieve PXT (I discovered the original UK settings had not been updated...)

The main settings for internet access are:

Name: VFNZ Web
APN: www.vodafone.net.nz
Proxy:
Port:
Username:
Password:
Server:

But in fMMS settings are:

Name: MMS
APN: live.vodafone.com
Proxy:
Port:
Username:
Password:
Server:
MMSC: http://pxt.vodafone.net.nz/pxtsend
MMS Proxy: 172.30.38.3
MMS Port: 8080

This adds MMS to the list of available connections.