To place images in Sc4Devotion you first take them in-game by pressing CTRL-Shift-S, or by going into the options menu in-game. Then you go into your "My Documents" folder, double click Sim City 4, and you should see about 8-10 folders. One should be called "Albums." If you have it that is fine, if you don't than you can easily create one (but you may have to go back to the game an retake your pics). Then upload them to any photo sharing site, personally I use
photobucket, but any other site will do.

But first you may want to edit your pics so they are in jpeg format. The game is programmed to take them in PNG format which take them in sizes about 10x larger than jpeg. The easiest way to do this (I think anyway) is to do this in
Irfanview. This is the easiest way. You first click "file" and then
"open". Then navigate the folders till you come to the "albums" folder again and then open the pics. Then "Save As" and put the format to jpeg. Then you can upload them to Photobucket or whaever website you use. However, for the saving images as jpeg I recommend making a sub-folder in the albums folder called "everything" or something like that. Hope this helps you greatly!