[EricVanWyk]

I suggest downloading Minitab. It is a really nice stat package that does exactly what you are asking for, and it comes with a free (30 day?) trial.

Once you've installed it, copy your data into two columns. Then go wild with all the different regression tests. If the test exists, Minitab has it.

You could also try MATLAB, but that is a more generic math tool kit. Minitab is just stats.