Zen: here's the TGA Version, in full size. I don't know if I can get Fractal Terrains to make more string-like islands, but I'll try with different settings and see what I get. (Your email address would let me send the results directly to you; I'm not sure this board is the best place to store such big files since it's just a transfer thing)
Here's another archipelago, with smaller landmasses. If anybody's interested, I can make a closeup, or a larger/smaller map, or whatever, or convert to .tga