>2) Ard, you mentioned you have a useable map that can do 9x zooming. >Wow! Can you give details on the size, resolution, etc? I happened to have a large, single sheet map available that covered the whole city in about 4 A4-sized submaps. Using an image maniputlation program, I moved the four parts about till they were a nice stitch without too much visible seam. As the map was detailed, the images were scanned at 300 dpi, and A4 is roughly 11x8 inches, I had 22x16 inch x300 dpi, so roughly 6kx5K. Clipping the odd harbour sites that were of no interest, I was left with about 5K pixel square. When running Kismac, I guess the average map size visible in my personal user environment is about 500x500 pix so that allows 10x zooming. Give or take a factor 2 here or there. Nothing fancy I guess. The whole map was some 100 MB during scanning and stitchnig (uncompressed TIFF) but once I cut back to usefull size, reduced to indexed 16 colors, applied lzw compression, I was down to 3 MB and was left with a spotty map with flakey colors. The best appearance, then, was when I changed the size of the original stitch to jpg compression (recursive error correction 5x) with a resolution of 3Kx3K at 72 dpi, yielding about 12 MB as map size in Kismac. Ard