How to execute an object program without creating a new shell ?

[PROLO%SBU.UFRGS.ANRS.BR at uicvm.uic.edu]

Hi,
I would like to know if there is a way of executing an object program (the sourc
   e is in C) without creating a new shell.

The program must change the current directory and maintain this new directory
   after finishing execution. On the normal run, after execution it changes back
      to the previous directory.

It would function something like Norton's NCD for PC.

By the way, I am working under System V.

Thanks for your attention prolo