Have you tried a search?

There are at least five:

• At the top right, a white box with Search written in it and an orange OK button next to it.
• In the menu on the right, with a down arrow next to it. It opens a popup with a search field and a Go button.
• The same menu also has a Tag Search...
• ...and Advanced Search option.
• Not to mention Power Search, also in the menu on the right.

Failing all that, when you start a new thread, you get a list of offers of threads with similar topics. I tried starting a thread with your title and at least one of those offers was useful.

Did you miss all of that? Spoonfeed.