Hmmmmm...
Maybe I jumped to conclusions- the line I added to the root crontab didn't seem to work after I verified the wget did work from a command line; then I saw a note somewhere on OpenWRT that said cron wasn't enabled by default.
The specific command I used was '/etc/init.d/cron start'
If you're saying Gargoyle does start cron, then I'll look elsewhere for the problem.
THanks.