For distributing your application to customers, you'll want to ensure you do NOT have a dependency on debug DLLs. Only the retail DLLs are included in the VC Redist package (i.e. msvcp120.dll).
For the internal debug/testing scenario (using msvcp120d.dll) on another machine, you'll want to copy msvcp120d.dll into the DEBUG folder when copying to your Windows 7 machine (i.e. App Local deployment). Note: It's likely that you'll also need msvcr120d.dll, as well.
For the internal debug/testing scenario (using msvcp120d.dll) on another machine, you'll want to copy msvcp120d.dll into the DEBUG folder when copying to your Windows 7 machine (i.e. App Local deployment). Note: It's likely that you'll also need msvcr120d.dll, as well.