After some googling, I found out about 'motion', motion detection software, seemingly designed for the job. I figured if I could run 'motion' on my DNS-323, I could make a workable solution.
EasyN FS-613A-M136 Wireless Pan & Tilt IP Camera
Motion
Recently I got around to trying it, and am pleased with the results so far, his how I did it -
Download and install development tools (thanks fonz) necessary to build motion using -
wget http://www.inreto.de/dns323/fun-plug/0.7/oabi/packages/
funpkg -i
for each of the packages below -
autoconf-2.68-oarm-2.txz
automake-1.11.3-oarm-1.txz
binutils-2.22-oarm-3.txz
gcc-4.5_20120202-oarm-1.txz
gcc-solibs-4.5_20120202-oarm-1.txz
libjpeg-8c-oarm-2.txz
linux-libc-headers-2.6.12.0-oarm-2.txz
make-3.81-oarm-2.txz
mpfr-3.1.0-oarm-2.txz
uClibc-0.9.30.3-oarm-1.txz
uClibc-solibs-0.9.30.3-oarm-1.txz
A small patch afterwards, to get it to link properly -
netcam_userpass admin:password
locate on
framerate 2
Works nicely!