Nathan, you've answered the question he asked, but it's not really the best way to do what he wants to do. A better thing to do would be to make a symlink in /etc/rc.d/rc7.d, like this:
# cd /etc/rc.d/rc7.d
# ln -s /etc/rc.d/init.d/snmpd S95snmpd
This will automatically start snmpd near the end of the sequence whenever the system starts. The only problem is that this will be removed whenever a console-save is done (because SME regenerates all the links in runlevel 7 at that time). To take care of this, we'd also do
# /sbin/e-smith/config set snmpd service InitscriptOrder 95 status enabled
This way, SME should rebuild that link along with the others.