attachMovie - it's friday please help

[pipmelons]

Just a quick one I hope...
I've attached a movie to my main MC using the attachMovie script.
How can I unload the attached movie but leave the main MC on stage? - I've tried but think I'm getting my syntax wrong.

i.e:

element_mc.attachMovie("superbrain_ex", "superbrain", 1)

i want to remove superbrain_ex but leave element_mc

thanks in advance... pip

[dodgetigger]

element_mc.superbrain_ex.removeMovieClip();

[pipmelons]

ta v. much