Let's say I find [a question][1] which is similar to one I already have, but I don't understand the answer, even though the OP got it. 

What's the best way to ask my question? 

e.g. Should I post a reply to the other thread, make a new question but link to the other thread, comment, or anything else?


  [1]: http://serverfault.com/questions/417921/why-do-modern-routers-not-require-clock-settings-anymore