Build new series with two series?

Hey,

Let's say I have a stock PG and an Index DJI.

out of these, I want to make the following series:

Y = Beta1 + Beta2*(PG(t-1)) + Beta3*(DJI(t-1))

where t-1 means that the data of the previous day is to be used.

Can anyone help me? As well, I used eviews to calculate the coefficients. Probably, it would also help me if someone told me how to calculate the coefficients.

Thanks

[Oleg Komarov]

Not clear what you need:

* do you have historical Y, PG and DJI and you want to calculate the coeffiecients?

* or, you have all of the RHS and you want the fitted Yhat?

* or you want to do both?

Seems to me both.