It can be done, but not easily. The potential for cracking the surrounding tile while chipping out the ones you want to remove is pretty high. If you're not confident of your DIY skills, I'd call a pro.

I wouldn't be so much worried about cracking surrounding tiles. That risk can almost be completely eliminated by scoring the grout out around the tiles to be removed. The thing I'd worry about is destroying the wallboard behind the tiles, and for that, there IS no way to really eliminate the risk. The best I could say would be to tap as lightly as you can and still be effective with a hammer to break the tiles out. I think I'd agree with calling a pro for this.

Thanks for the info. I thought it would be too difficult to try myself. Some things are best left to the pros!