>We are recompiling our apps, going from VFP7 to VFP9. It seems that the recompiles are going very smoothly, however, when I go to run an app it does nothing. Our environment has always been a mapped network drive on a server running all apps. We just copied the VFP DLL files to that drive, put the EXE and data there and off we go. I copied VFP9ENU.DLL and VFP9RENU.DLL to the drive, what else do I need to do?

The VFP9ENU.DLL is not used by runtime.
For minimal install, you need VFP9R.DLL and VFP9RENU.DLL.
For complete list of VFP9 runtime files see http://fox.wikis.com/wc.dll?Wiki~VFP9RuntimeFiles. Which additional ones you need will depend on what features you're using in your application.