HELP - problems modding land textures!

[iambecomelife]

Hi! As part of an upcoming mod for SH4 I have tried to get rid of the "pool table look" that the land textures suffer from. I would imagine that a typical coastline at the turn of the century would have a variety of earth tones, cultivated patches of land, and so on.
I have replaced the stock grass textures and tested some huge TGA's based on Google Earth files. While the textures themselves look fine, I am getting an ugly black border near the water - plus, the underwater textures are completely black.

1) What is the default ocean floor texture, and how do I get it back?

2) Can the texture coexist with the new tga's, or will I be forced to use one or the other?

3) Does this have anything to do with me using TGA's instead of DDS files?


I would REALLY appreciate any help from the more experienced environmental/texture modders.

Thanks!