Add "Run in Separate Memory Space" check box to Run dialog box
User Configuration\AdministrativeTemplates\Start Menu & Taskbar
Lets users run a 16-bit program in a dedicated (not shared) Virtual DOS Machine (VDM) process.
All DOS and 16-bit programs run on Windows 2000 in the Windows Virtual DOS Machine program. VDM simulates a 16-bit environment, complete with the DLLs required by 16-bit programs. By default, all 16-bit programs run as threads in a single, shared VDM process. As such, they share the memory space allocated to the VDM process and cannot run simultaneously.
If you enable this policy, the Run in Separate Memory Space check box appears on the Run dialog box, giving users the option of running a 16-bit program in its own dedicated NTVDM process. The additional check box is enabled only when a user enters a 16-bit program in the Run dialog box.