Hello -

1) You have to have been a member for 90 days in addition to having 90 posts
2) It will show within the community forums once both of these requirements are met
3) If you have been a member for 90+ days and still don't see the link, try logging out and then log back in. Give it a few hours (maybe up to 1 full day) for system to reset etc.
4) If after #3 you still can't see the CC link (and you've been member for 90+ days), could be a technology fluke and contact a moderator such as wharvey.

Good luck.