[Bio-software] Needleman-Wunsch - producing more than the optimal solution -- please help

[almurph from altavista.com]

Folks,

	I want to modify the Needleman Wunsch algorithm (pseudo-code here:
http://en.wikipedia.org/wiki/Needleman-Wunsch_algorithm) so that it
produces more than the optimal solution.

	What I want is the optimal solution, second optimal solution, third
and so on do the chain.

	Problem is though I don't know how to do this. Can anyone help
please? Any comments/suggestions/code-sample would be most
appreciated.

Thanks,
Al.