DOS apps are generally confind to the folder that they are installed in. You should be able to copy the files to disk. You could search and get a copy of "pkzip" to zip up the files.
You should look at and print out the contents of the autoexec.bat and config.sys files. You'll probably need some of the settings. DO you still have the manuals?
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Don't forget to post the "results" of any suggestions you see on the board. Good, Bad or Otherwise.
If you're happy and you know it......it's your meds.