If you want some more infantry images to play with, take a look at
http://www.dogscoff.co.uk/neostandexpansion.htm and
http://www.dogscoff.co.uk/propresp.htm
Please include credit for any images of mine though, I worked hard on them. That includes the cue cappan image you used btw, I drew that.
Ask me nicely and for most of the images on those sites I can probably provide you with some higher-quality 512*512 (or larger) bitmaps to trim and resize from, should give you a better quality final image.
Oh, you might also be able to use this one:
And here's Sgt Squiddie in his full sized 512*512 glory, because se4's 128*128 just doesn't do him justice:
And finally, the Texrak Battlecow, just because I like to drag him out and parade him around at every opportunity:
