All credit goes to NvrStsfyd over @ androidforums for this great post on the Motorola Cliq...
[Only registered and activated users can see links. ]


STEPS: Settings>Wireless Controls>Mobile Networks>Access Point Names> Then click on the left button to create a "New APN"

AT&T -APN SETTINGS

Internet Settings
MMS Settings
APN: wap.cingular
Proxy: [Leave Blank]
Port: [Leave Blank]
Username: [Only registered and activated users can see links. ] - (use CAPS)
Password: CINGULAR1 - (use CAPS)
Server: [Leave Blank]
MMSC: [Only registered and activated users can see links. ]
MMS Proxy: wireless.cingular.com
MMS Port: 80
MMS Protocol: [Leave Blank]
MCC: 310
MNC: 410

Never know what you might need later on down the road.....

Also would like to state that this post was found by ten0playa04.. So good find ten0.