I think this is in the download area. I have found it great for comparing prg's

FCU, File Compare Utility
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FCU is a file compare utility for comparing text files. The compared
files are displayed in three windows: left file window, right file window
and an extra window were the composed file will be displayed.

Different sections are colored with red (left file) and yellow (right file)
background. Anyhow the color for the background can be changed.
User friendly commands allow a quick insertion and deletion of the lines in
the different sections.

In addition it is possible to compare directories including subdirectories,
as well specify an file mask for the files to be compared. The different files
are then displayed in a list control. A simple double click on the line containing
the file will open a 'Compare File' view where the files can be examinated or
merged.