:Hi, Teej. About the photo - it's an old NPS photo, if you have a better one, feel free to replace it. There are two methods for uploading photos, depending on whether you want to make the photo available to just the English Wikipedia or all languages. In either event, get a hi-res photo ready on your computer with a sensible filename (that filename will get copied up to the Wikipedia).  

 :If you want just English, click on "upload file" to the left, then follow the instructions. When you're done, there will be a Wikipedia page with the same name as your image. So, if you called it "Katahdin.jpg" the correct link would be Image:Katahdin.jpg. In the infobox, replace the existing jpg link with your new file, perhaps giving it a new caption. 

 :If you want all of the 'pedias (the recommended option), go to http://commons.wikimedia.org, click on upload file, and follow the directions. Getting yourself a user name on Commons may be a good idea (first). The extra steps needed for a Commons image is that you should find a category or article at Commons to fit the picture into (I've put the existing pic into the Commons category "Mountains of the United States"). The cool thing about Commons photos is that you don't have to do anything special to use it - again, if you've uploaded a photo named Katahdin.jpg to Commons, just link to it like Image:Katahdin.jpg here at the English wikipedia. 

 :In either event, you'll have to decide how you want to license your personal photo. It's up to you, although non-free licenses are not permitted at Commons. People typically license using GFDL, so you can add the template {{GFDL}} on your image description page. Or you can release it to the public domain with {{PD}} 

 :Hope this helps. 

 :And, re name, check out http://geonames.usgs.gov/pls/gnis/web_query.GetDetail?tab=Y&id;=579940 ... The official US government name for the mountain is Mount Katahdin (this USGS database is contains the official names of all sorts of US locations).  

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