This keeps coming up - GCC, or GC Chat (https://annabelleigh.net/cgi/GCChat/chat.cgi) is not available to new users. When you are registered, you can post on the board only.
See the FAQ:
>>Only "known" members with a minimum of three months of regular participation in this community will be considered for the privilege of live chat access.
Note that three months of regular participation is the minimum, it does not guarantee live chat access.