Show Run in Separate Memory Space Option (Windows 2000/XP)

This setting controls whether the "Run in Separate Memory Space" option is shown in the Run box, which allows you to run 16-bit programs in a dedicated Virtual DOS Machine (VDM) process.

1.Open your registry and find or create the key below.

2.Create a new DWORD value, or modify the existing value, called "MemCheckBoxInRunDlg" and set it according to the value data below.

Exit your registry; you may need to restart or log out of Windows for the change to take effect.

Registry Settings
User Key : [HKEY_CURRENT_USER\Software\Microsoft\Windows \CurrentVersion\Policies\Explorer]
System Key : [HKEY_LOCAL_MACHINE\Software\Microsoft \Windows\CurrentVersion\Policies\Explorer]
Value Name : MemCheckBoxInRunDlg
Data Type : REG_DWORD (DWORD Value)
Value Data : (0 = default, 1 = show checkbox)

Disclaimer : Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.