ADODB not properly installed on Win7-64?

My .net windows forms app won't run on Windows 7 64 bit. Error says ADODB not found. Giving it the dll (by putting it in with the pro开发者_JAVA百科gram) then gives error that ADODB provider is not properly installed. How to fix this?

The app must run as a 32 bit process as OLEDB is not supported in 64 bit processes.