Do you have the thread or are you trying to find it ?How long ago did you make the post and what was it about ? If it's been in the last year you should be able to sort it out by looking at your active threads. Otherwise you will need to run a site search on Google to find it.

If you already have the link to that thread. Copy and paste it from the address bar into your reply. Some browsers automatically make it a hot link others you need to make it hot by using the little chain link function.

Need more info to help you proceed.