To install:

1) Copy the desired .sty files to your favoriate LaTeX library (e.g.,
/usr/lib/tex/inputs).

  txt.sty      - Generates fixed-width font output from LaTeX input.
                 Does flush-right output if doc.tfm is installed.

  txt-old.sty  - Older version of txt.sty that generates ragged-right
                 output, but does not require doc.tfm

  txt.tex      - "Documentation" for the above.

  rfc.sty      - .sty for Internet RFCs.

  i-d.sty      - .sty for Internet Drafts.

  rfc.tex      - "Documentation" for the above.

2) Copy the doc.tfm file to your favorite LaTeX font directory (e.g.,
/usr/lib/tex/fonts).

3) Make and install the new version of dvi2tty:

  cd dvi2tty
  make
  cp dvi2tty <your favorite binary directory>