I asked a question in here some hours ago. Unfortunately I did not register on my first visit. Now - as registered user (I created a new account on another computer) I'd like to comment on the solution (not working btw). How do I "overtake" the ownership of my own question?

I asked a question in here some hours ago. Unfortunately I did not register on my first visit. Now - as registered user (I created a new account on another computer) I'd like to comment on the solution (not working btw). How do I "overtake" the ownership of my own question?

edit: Thanks for moving - couldn't ask in meta without 5 points.