SajhaHelpuser, you are still not very clear on your issue. If I understand correctly, you want to package your applicate and deploy/have it extracted in that SQL DB folder.
Considering you are doing development thru Visual Studio, You can do. FIle>New Project> other Project> Setup and Delpoyment.
http://support.microsoft.com/kb/307353
http://www.google.com/search?q=how+to+create+a+package+in+visual+studio&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a#q=how+to+create+a+package+in+visual+studio&hl=en&client=firefox-a&hs=ypy&rls=org.mozilla:en-US:official&prmd=ivns&source=univ&tbs=vid:1&tbo=u&ei=VVVDTYm0BcnUgQfto6DoAQ&sa=X&oi=video_result_group&ct=title&resnum=6&ved=0CEEQqwQwBQ&fp=1c5f2baf197528df
Bunch of youtube videos aswell.
hope this helps....if that was your issue.