I'd like to thank you, and everyone else, for their advise with regards
to my 'config.sys' problem.  I found the solution! It's something I should
have learned a long time ago.
" Always read the readme files before trying to install something! "
In the MPTS directory on the OS/2v4 CD  CID\IMG\MPTS
is a readme file  README.MPT that I had overlooked. Apparently the
file \OS2\INSTALL\IBMLANLK.LST can prevent MPTS from installing sometimes.
Once I moved this small text file to a floppy ( I never delete stuff
since I almost always regret the deletion latter ) MPTS installed OK.
With MPTS installed OK, TCAPPS installed OK.  I can now get
onto the internet with Explorer and everything is working fine.
Thank you all for your assistance! 

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