reply for Dr. Benn
use a "better" digital camera or an SLR system!

ok sorry, lame answer...
besides my canon SLR system, i own a canon s330. what i meant by "better" digital camera is one that enables you to set aperature/shutter speeds, ISO settings, etc. this way you can set these settings for the lighting of your subject or a creative effect you're after. unfortunately, your s200 (like my s330) doesn't allow you to manually set these things. so if you're trying to get crisp, low-light shots with your s200 of a slightly moving subject with only your hands, good luck.
here's some tips to try to help...
- if you have an ISO setting feature (like my s330), set it to the highest ISO speed (like 400+). i think you're camera might automatically do this or maybe not - find out. might have more grain...whatever...
- use support (better yet, a tripod!). but if no tripod or another means of support (wall, chair, lampost, ect.) is available, hold the camera with BOTH hands, keep your elbows tucked against your body, and sqeeze - not push! oh, and contrary to popular belief, holding your breath won't make that much of a difference to keeping your hands still. try breathing normally and at the end of say, the third, normal rhythmic breath when you completely exhale, pause - then sqeeze the shutter release. (tip from trigger sqeeze moment training for snipers in the army)
hope this helps!