Nutty wrote:... What's got me bugged is ... how am I supposed to tell which surface I am creating a texture for because the texture map is 8x larger than the heightmap?

...
The heightmap and the minimap should be 1/8
+1 of the texture, yes. I think...
About how you can syncronize you drawing of the texture with the rest (metal placement and hills and stuff), you can:
- pick up the height/metal maps and resize them to the size of the texture.
- copy them and paste them in the texture image as a new layer. (you'll need a program that's not crap and suports layers. Gimp is free. Photoshop is the best but expensive)
- now, you can either alternate from viewing the maps or not so you can draw the textures from memory or (my favourite method) you can choose to be viewing the map special layer but draw in another layer, the texture one.
Still, things aren't going to be perfectly alligned.