You haven't explained what the format of the text file is and
how you want to display it. You can get the contents of a file with
CFHTTP (if it's in a web-readable directory) and treat it as a
query if it is in a delimited data format. Then you can use
CFOUTPUT as you would with any other query.
You can also use CFFILE to read the contents of a text file
and display it in your page. You can use HTML PRE tags or you can
replace the CR/LF with a BR tag to force a line break.. Lots of
options, depending on your particular situation.