Well, if you mean how we got it to finally work, sure.
When I initially created and edited the terrain in TerraGen, I could change the bottom of the sea floors' level to the highest part of the map.
All I did was take about 6 or 7 hundred meters off the top, and changed the lowest level to -50m. Then, started the import process. Loaded the .ter file into Wilbur, then saved it to the lat/lon.txt file. Here, however, it usually always says that there is an extra pixel (or cell, in WRPTools' case) in the island. You can normally change this by typing in 256 instead of 257 in the height field, then pressing set to pixel. I am sure most people have already had this problem. Now, when you load it into WRPTool, you need a base island to start with. In my case, all of the Wilbur import have been in the 256 (12km) island range. You create a new island (256) and import the wilbur terrain.
If the Set To Pixel button changes the height back to 257, do not worry! All that this means is that your map will be cut off by one pixel (cell) in WRPTool.
SOMETIMES the import goes haywire and it doubles or even triples the size of the terrain you've imported! After this, you need to start with a new lat/lon.txt piece because the one you were using is now streched and ruined.
AnarCHy