DOS to SCO XENIX and back

[Cliff Manis]

        SCO 2.2.1 to MSDOS   <--------->  MSDOS to SCO 2.2.1
        ------------------                ------------------

In my office we have about 30 users who have PCs with both Xenix & DOS
on the same harddisk.  Note:  These are all 286 machines, and yes, we
know about VPIX.  

Has anyone seen a program to easily go from DOS to SCO XENIX ? ? ?  and

                               also go from XENIX back to DOS ? ? ?

i.e. Press a button on a Xenix menu and the system would go to DOS or
     maybe even a DOS menu.  

Please if there is anything, PD, not PD and for sale, we will buy it. .

I would appreciate any return mail....or any posted information on this
subject....        
                               Thanks in advance.  Cliff