How to make sprite run out from a sprite with XNA framework?

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C#

Mobile

C#3.5

game

XNA3.0

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Hi everyone!
I am trying to write a game with flatform window phone 7,
and i'm still beginner.So i hope someone know how plz help me. I will grateful to u.
This's my problem. i have 9 bushes (bush) and i am trying to make my animals move out from a bush and run to our face.but really i have no idea how to find the way it work.
I use keyword " load sprite over sprite" with google.com but don't C any thing good.
Plz someone teach me or let me know keywords for searching.
This is my first time, i write a game. Therefore,plz help me.
Sr for may bad english.
Thx for reading.
Sincerely.