I can't believe it's been nearly a year

Last year about this time I tried to resurrect an MS-DOS based note-taking system on a hand-me-down Tosbiba laptop. I ran into trouble trying to remap the keyboard so that I could have the right side Alt and Ctrl keys that my DOS software relied on for keyboard commands.
In the meantime my health went to hell in a hand-basket and I'm only now getting back on my feet (so to speak. I have difficulty sitting up or standing for more than a few minutes at a time, so I spend the better part of each day in bed).
A few weeks ago I dug out that old Toshiba laptop and decided to tackle this project again, and am trying to get a utility called KEYMAP.COM working on it.
I'm trying to figure out how to use the program. The documentation, such as it is, is little more than a list of the command line options.
I suspect I'll need to put commands in my config.sys file, or something like that.
I'd be grateful if one of you could take a look at this utility to see if you could help me figure out how to use it.
Will in Seattle
a.k.a. "Clueless"