A week ago I asked this question and all I got was a lousy Tumbleweed badge. In the hope to still get some help (and that the question is not too low-level), I would like to give it a try and ask the question on MathOverflow. Can I simply repost it there? Or should the question be migrated? How is it done? Will a migration affect the tumbleweed badge? (Lousy or not, now that I got it I really want to keep it...)
EDIT In the meanwhile, Daniel Fischer gave a very nice answer. It turned out that my question certainly wasn't "research level", so I'm glad that I finally got an answer here and the question did not end up on MathOverflow.