Cut and pasted from that link.
Hi all got my mms working at last on o2 simlicity and pulse, you need to setup 2 apns one called t mobile and one called t mobile internet and then setup like this.
•NAME t mobile internet
•APN wap.o2.co.uk
•PROXY not set
•PORT not set
•USERNAME o2wap
•PASSWORD password
•SERVER not set
•MMSC not set
•MMS PROXY not set
•MMS PORT not set
•MCC 234
•MNC 10
•APN TYPE not set
Then APN 2
•NAME t mobile
•APN wap.o2.co.uk
•PROXY not set
•PORT not set
•USERNAME o2wap
•PASSWORD password
•SERVER 193.113.200.195
•MMSC
http://mmsc.mms.o2.co.uk:8002
•MMS PROXY 193.113.200.195
•MMS PORT 8080
•MCC 234
•MNC 10
•APN TYPE not set
Credit goes to Bigsy who found the information for me earlier in this thread.