well, I don't know for sure.
But the P1000N/L has different touch screen driver in their kernel.
You can flash it using Odin and you can even use the recovery, since CWM isn't touch screen based.
But that is not what I am saying above.
You asked for guide, I said Overcome guide is clear.
Have you even download the PDF and read?
Page 7/8 has picture of what to put in Odin fields. You can put GB stock safe v4, v5, or whatever, a Panama or Trinidad based GB, or even Froyo, the picture is still going to be the same (or similar).
So, use your froyo, use the guide. (or not) up to you.