Here, perhaps this will help:
I created a program a while ago that rips sprite sheets into different individual images. This zip file contains every sprite as a different PNG.http://www.otcsw.com/files/Sprites.zip
And if it's too annoying, just don't use the sprite sheet. I apologize for choosing a bad one - I was looking for around an hour for something that would work and just didn't succeed.
If anyone has good royalty free sprites, put them here and we can make the change if that's what everyone wants. I figured you could at least use the explosions from the bomb.
And remember that the rule is not that you can only
use those sprites, it's that you just need to use one