Once again, thanks for the script as it has made my life a lot easier. Right now I am DMing a game and it has allowed me to quickly make reasonably nice looking maps which I can print out at full size on a 34x22" plotter. I don't expect to use any of my maps more than one time, so being able to churn them out is key, and I am very thankful for that. Below are a couple examples in case anyone would like to use them. I am also fairly inept with image editing programs so they are more than a little rough around the edges, but am improving.
Anyway, my process is to sketch a map out on graph paper, do the lines with a permanent marker, scan the drawing, cut out the black lines and paste them into a new image to eliminate the graph paper grid, adjust the color levels so that the black is truly black, fill in the walls, and finally use the script to convert it into a nicer looking map.
Thanks again Rob!