I'm going to have to find a good digital thermometer now! But don't have one for tonights meal, so thanks Meat Burner for the time estimates. I've read several posts on the temp being approx 30 degrees different at the grate, so I was going to take that into consideration as standard for mine too, until I get a thermometer. Well, dinner is at 5:30, so I better get things started heating up.
Thanks again to everyone who's replied, I'll check back after I get things started for any other great advice.