I'm running Windows Vista 64-bit on an AMD 64-bit duo processor system.  I tried installing RealPlayer, the free version, onto my system, but that failed.  Now I cannot run it, uninstall it, or attempt to install a new version.  Whenever I try to call it I get the following error message:

This application has failed to start because MSVCP71.DLL was not found.  Re-installing the application may fix this problem.

I've been looking around for help on this and it has been suggested that this DLL is a part of VS 2003.  That may be the case, I did not install VS 2003 onto my system, as I just want to go with VS 2005 and VS 2008.  Anyway, what is the cause of this error and what can I do to remedy it?