Question : Change CommonProgramFiles

Basically what is happening is that we have a Citrix Server.  We renamed the local drives to M: and N:.  Everytime we try to install a program, it says invalid drive H:.  Looking deeper, I noticed that when I typed "set" at the command prompt, CommonProgramFiles was set to H:\Program Files\Common Files.  It SHOULD be M:\Program Files\Common Files.  How do I change this?  I checked Environment Variables off the System Settings and it wasn't even listed!  Thanks for the time!

Answer : Change CommonProgramFiles

Goto Registry, navigate to this location and change the path or drive: -
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
Value Name: CommonFilesDir, ProgramFilesDir