Inserting extra frames on the main timeline. Help please

Hi,
I have already some animation on my main timeline from frame no. 1 and to frame no. for example 1000. Now I need some more animation BEFORE this. Can I insert some extra frames in the begining of the timeline?
I mean not need to cut and paste the exisisting frames, but get frames in the begining. Do I have to put a scene before this one?
Thanks :slight_smile:
mx-guest2004