As the guy who created the new City of Greyhawk maps for WotC/RPGA, I've often been asked "How do you make your maps?" To answer that question in a way I could never do in a forum post, I recently put up a new page on my website for those who are looking for mapmaking advice for their campaigns and/or websites, including general comments about the various mapping software available, common design mistakes made by software users, and illustrated advice on designing medieval cities. For "a Guide to RPG Mapmaking", go to
http://melkot.com/mechanics/map-guide.html
You may also want to check out the rest of my site, as there are original maps scattered about the entire site (mostly in the "Greyhawk Locations" section), many of which can be used for non-Greyhawk campaigns as well. Go to my site map page at
http://melkot.com/sitehistory.html to find out what other stuff is there.
Denis, aka "Maldin"
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Maldin's Greyhawk
http://melkot.com
Check out the ton of cool Edition-independent stuff on my website:
New Spells, Magic Items, Campaign Notoriety, Artifacts, Kyuss, secrets of the Twin Cataclysms, the Codex of the Infinite Planes, the Dreadwood, the cities of Melkot, Greyhawk and Irongate, a Grand Unified Theory for all of D&D, and much, much more!!