One thing you want to avoid is posting the same question to multiple boards.
Try to pick the best board for the subject matter. If it is a hardware related topic then post it too the related hardware board, if its mainly software then post it to the software board don't post it to the hardware and the software board.
Try give as much detail as possible, gives versions of the software, drivers etc that you are using. Also try post an example.
If its an topic that someone has come across then you probably will get a quick response.
If you find that answer by your self then Well Done!, ....but share your answer.