Should I be trying to replicate the NEAS results?

[NEAS: This is an independent student project. The NEAS postings are suggestions to get you started. You can construct an ARIMA model, compare two or more models for a given era, compare two or three eras by type of model of by model parameters, examine seasonality, test out-of-sample forecasts, and many other items.]

I want to do a Durbin-Watson test on an ARMA(1,1) series, but I only know how to use Excel regression on AR(1), AR(2), etc to get the residuals.

But there are some examples of student projects that got the values, but they didn't mention using Minitab or something else, so I assumed they used Excel.

Any ideas?

Thanks for any help.