Every time, I klick some parameters for the search and confirm with "find users", the results are shown BELOW the search fields.
Correct, CB Userlists have always worked this way.
I need them to be shown in a parent window, because the search fields need a lot of space. So the user can't see the results without scrolling.
You can't without completely editing the userlist behavior. Changing the FORM to post to a new window won't help much either as it'll still show the search criteria.