OS/2 FOR WINDOWS COMPATIBILITY WITH MICROSOFT WINDOWS 3.11 Q'S AND A's
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THE FOLLOWING INFORMATION HAS BEEN PREPARED FOR THE USE OF IBM
EMPLOYEES/CONTRACTORS IN DISCUSSING OS/2 2.1 FOR WINDOWS 3.11
COMPATIBILITY CODE (WIN311.ZIP) WITH CUSTOMERS.



   1.  What is this code and why would I want it?

       This code is necessary to allow OS/2 2.1 for Windows to
       interoperate with Microsoft Windows 3.11.  This code is not
       needed by customers who have OS/2 systems or customers
       who have OS/2 for Windows systems but who do not have the
       3.11 level of Windows.  This code is also necessary for
       OS/2 2.1 for Windows to interoperate with Windows for
       Workgroups 3.11.  However, applying this update does not
       make the Windows for Workgroups networking functions
       available to the OS/2 for Windows environment.


   2.  What does this code do?

       This code modifies OS/2 code to allow it to interoperate
       with Microsoft Windows 3.11.


   3.  How does this code install?

       This code installs on OS/2 2.1 for Windows by typing
       "A:install."


   4.  Do I have to have Windows 3.11 installed already?

       Yes:  either Windows 3.11 by itself or Windows for Workgroups
       3.11.


   5.  If I install this code on OS/2 for Windows, can I still
       use Windows 3.11 from DOS?

       Yes.  For example, if you have a dual boot or boot manager
       system, you can run Windows 3.11 from DOS just as you did
       before you installed this code on OS/2 for Windows.


   6.  Does this code upgrade my Windows 3.1 system to Windows 3.11?

       No.  This code modifies OS/2 for Windows.


   7.  Will this code work if I have OS/2 for Windows with
       ServicePak XR06300 applied?

       Yes.  This code can be installed on OS/2 for Windows
       CSD levels XR02011 (the original OS/2 for Windows) and
       XR06300 (OS/2 for Windows plus servicepak XR06300).


   8.  Does this code affect my Windows for Workgroups function?

       No.  The networking functions of Windows for Workgroups 3.11
       are available via OS/2 for Windows's dual boot capability
       to the native DOS and Windows for Workgroups environment.
       Applying this update does not make the Windows for Workgroups
       networking functions available to the OS/2 for Windows
       environment.


   9.  If I install this code, will I see performance changes
       in running Windows 3.11 under OS/2 for Windows?

       We have not measured the performance of running Windows 3.11
       under OS/2 for Windows versus running Windows 3.1 under
       OS/2 for Windows.


  10.  Why did not OS/2 2.1 for Windows support Windows 3.11 when
       OS/2 2.1 for Windows was released?

       Availability of Windows 3.11 occurred after the availability
       of OS/2 2.1 for Windows.


  11.  What happens if I try to use Windows 3.11 from OS/2 for
       Windows without installing this update first?

       You will get a SYS 3176 error message that will tell you
       "A program in this session encountered a problem and
       cannot continue."  Your system will not trap or hang.
       You will be able to recover and perform other functions
       in the OS/2 for Windows environment.