I do not have Mac, but at one of the forums I worked, we had a lot of Mac users and I compiled a good size list of Mac freeware sites. Found several screen shot apps, but most were not 10.3 compatible.
SnapNDrag - has a 10.3 version
http://www.yellowmug.com/snapndrag/
InstantShot - I cannot tell if compatible with 10.3
http://projects.digitalwaters.net/in...?q=instantshot