The files here are as follows:

	ddplan.215.zip		DDPLAN version 2.15 for DOS/Win/NT
	ddplan.lnx.215.tar.gz	DDPLAN Version 2.15 for Debian Linux
	ddplan.rh6.215.tar.gz	DDPLAN Version 2.15 for RH 6.2 Linux
	ddplan.sol.215.tar.gz	DDPLAN Version 2.15 for Solaris