Lex Yacc in Builder 6 (or any old parser)

[aldous]

I have proprietary ascii file formats I need to parse.
I don't want to write a bunch of if else case nonsense
when there SHOULD be a simple parser with a grammar, yeah?

So I found Parser Generator from Bumblebee...
(ayacc and aflex)
but it only supports version 4.52 of Builder (with some
hope for version 5). But I'm running Builder 6.
They provide binaries and libraries...and supposedly
project files for Borl C++ Builder. However, the
project file they give is YYLIB.IDE.
There is no project file with that extension I see,
and when I try to load it, I get truncated errrors.

Anyone got Parser Generator to work (HOW?)
OR
Anyone know another parser or source to
parse my files intelligently?