Dependent variable in second differences

[kakkawo]

Hi,

I'm doing my final project and i never worked with eviews, in my university we just use gretl :/

But i think eviews can resolve my problem better.

I want to study time series, but the dependent variable is just stationary in second differences (I(2)) and i don't know how to include it in a reasonable model.

In fact, i just worked with models with first differences (I(1)).

Can anyone help me? I have already ask some teachers, but nobody helps me.

Thanks

[EViews Gareth]

What are you asking?

[kakkawo]

I want to know how i can build an econometric model in which the dependent variable is just stationary in second differences. All the explanatory variables are integrated of order one