I put mine out about a short while ago and I LOVE it. As far a settings go, here is what I discovered...
Set the PIR sensitivity to high or it will only take pics of objects that are VERY close.
Set the interval at 1 min or if you have a lot of movement at one time, the flash doesn't have time to reset fast enough. You will have some good pics and some all black ones sent to you.
I run two 4GB SanDisk cards. I loaded the settings file listed on the review page on both cards and switch them out each time I go out to the cam (I only make it out to the place once or twice a month and 4 gig holds a TON of pics).
I use AT&T for my cell service and I have a family plan with the wife's phone on it. They added a line for $5 a month and sense we have unlimited texting on our regular plan, that is the only extra charge. they did make me buy the sim card for about $15.
Seeing as I don't get out to my place very often, I put an external battery with a solar panel on mine. I listed how on an earlier thread. It has now sent 451 pics and no signs of slowing down.
Here are the links to the review page with the settings on it and the thread with the external battery info.http://www.chasingame.com/index.php?id=193 viewtopic.php?f=34&t=19546
I hope all this helps.