Unable to load DLL 'sqlite3': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

I am working on a windows forms application. when I run the application on windows 8 (VS2012), the application runs upto an extent and then crashes, giving the exception "{"Unable to load DLL 'sqlite3': The specified module could not be found. (Exception from HRESULT: 0x8007007E)"}".

I am unable to include sqlite3 dll in the references. when I try adding it and change the Copy Local attribute to True, I am unable to do it as whenever I build the solution, this attribute gets changed to False automatically. also when I try adding SQLite3 through the release\x64 folder, I get an error that the file is not accessible. kindly help me fix this issue!!