During the past two weeks, I've been creating ambient occlusion bakes for all current OpenArena characters.
I rendered the textures with padding, so you won't get any black seams. I also included a mask in the alpha channel that has the UV islands without any padding.
Here's a ZIP file with all the baked texures: http://dl.dropbox.com/u/2167961/OpenArena_ambient_bakes.zip
And here's a little preview of what it looks like:
I hope you'll find these useful for your skinning purposes!