Dave,
If you have the demo board, it should include the lastest (and only) TCP/IP stack. Freertos.com does not include the TCP/IP stack. And, while the InterNiche Lite included with the DEMO is based on freertos, it has been hacked up and pasted (poorly I must say) into the CodeWarrior IDE. Unfortunately, there are a lot of bugs in it and no good place for users to post updates or changes (other than here!).
If you don't have the demo code, you can download it from FreeScale. Look for "COLDFIRE_TCPIP_LITE"
FlashToo