Start a movieclip when another one reaches a certain frame

I have been playing with this idea for a few hours and now I’m completely miserable,

I have two movieclips, mc1 & mc2.

mc1 is palying a simple animation.

I want to write a script so that when you rollover mc2, it checks mc1’s frame number. if mc1’s frame number is for example “10”, it should play its own animation. otherwise is should wait until mc1 reaches frame “10” then play mc2 animation.

Can any of you guys suggest a solution for this?