Before asking a question in a forum, you should check to see if it (or something similar) has already been asked. Do a Forum Search to verify.
In M4T, the first block at the top of the middle (or right-hand) column is the "Search Forums" block. There is also a window titled "Search Forums" at the top of every forum.
Insert the topic that you are looking for in either of these windows and press on Go. If you don't see what you are looking for (or are looking for a specific author) please press on "Advanced Search" and fill in more details of the search.
Make sure you're asking your question in the correct forum.