RS232 Shield For Arduino

I have a couple of GPS shields, and I want to read the data from the GPS module on the shield as RS232 data.
One shield is an old LadyAda design (GPS datalogging shield for Arduino) on a Duemilanove and the other is a GPS shield for Arduino V2 with an external GPS antenna on a MEGA 2560 R3.
Would it simply be a matter of stacking these boards onto the Arduino and being able to read the GPS off the D9 connector or would there be programming/jumpering involved?

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Hi @m0hkg and welcome to the forum.

I guess you would need some programming.

See these examples here: