LOOKING FOR ALTERED SPRITES, OR MORE APPROPRIATE ONES.

Hello, I'm trying to find altered versions of the default character battle sprites in RPGMaker 2003, so I thought I'd ask here. When I say altered, I mean something along the lines of everyone *not* having a ridiculously cute look on their collective faces. The game I'm intending to make is going to be rather dark, and the defaults are just inappropriate for the theme. If such sprites don't exist, then I'd really like to be directed to a site that might have something better made for a darkly-themed game. Thanks for the help!

Also, is there another RPG making game engine that is compatible with Vista and is free, I'd love to hear about it, especially if it's first person. Again, thanks for the help.