create setup with sql server 2008 database

Question

Hi all, Thanks in advance. I need a help urgently. I have developed an application with c#.net & sql server 2008.Now i need to create the setup and deploy it in the client side. but i am rather confused. while i need to install sql server 2008 there. or there is any other way , that during installation of my setup file database will be craeted and there is no need to install sql server 2008 there.
Please help me. it is so urgent.
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sweety