Hi again... ok some more info.
Well, I arrived *very* early... 4 hours. And I took my sweet time - I had a drawn out plan of attack on a piece of paper. I had previously tested all the cables and had them labeled already and had all the mixer eq's and faders set to unity.
Once I had everything hooked up, and the band had arrived, I got them all set up and miced. I told them sternly that if they kept their amps at reasonable levels and had a nice balanced sound on stage, they would sound a ton better out front. They actually took heed to that advice thankfully!
I got the FOH speakers set at a perfect height (had to borrow a few stands). They ended up at the same height as the bands amps.
I did mic the drums. A pair of overheads and one on the kick and one between the snare and hi hat. When I sound checked the drums, I got a nice balanced mix for the kit. I had to do some pretty heavy eq'ing to get the kick to sound good, but I believe I got it. And the interaction between the bass and the kick was really good (IMHO!).
And then I subgrouped the drums so I could just bring in the drums enough to hold the bottom end along with the bass once we did a full band sound check.
I did mic the bass and am glad I did. I also angled the bass cabinet so the band could hear it clearly on stage and didn't run the bassist through the monitors.
I only had a touch of reverb for the vocalist (the room was huge so even dry the vocalist sounded like it had verb).
On the board, I pretty much used subtractive EQ (as needed) on each instrument and made sure I kept on checking that everything was gain staged properly and there wasn't any weak or overdriven signals happening - on each channel and when summed to the mains.
I actually strarted out with a monitor mix and kept the mains off and got everything set to the band members demands. Didn't actually run into any problems there. The band could clearly hear themselves plenty loud enough.
As far as the mains, well I had them sound check for a couple songs and got a nice balanced mix going. I had them play their heaviest piece (so I had no suprises mid-set). Sounded good.
As far as the main EQ's, it had that feedback elimination thing on it and actually nothing was really blinking at all. There was nothing feeding back either... So I left it flat as advised in this thread.
I did, however, use the low cut filter on the EQ and had that set to around 80Hz (I think). It seemed to really clean up the mix and it sounded more focused when I activated it.
Another thing that suprised me is that as I slowly brought up the power amp level on the mains, there was a spot at about 2 o'clock (little past half way turned up) that it just sounded really crisp - not too quiet, but definitely not super loud.
As I made it louder, it just got messy sounding... and I felt it was just too loud. I walked around the venue as they soundchecked and made sure it wasn't too quiet at the level I had set it at. There was plenty of energy and power still, it just wasn't that "too loud" level that I have often heard at clubs. Although I had a few dudes that arrived early that were barking at me that this was wrong and that was wrong... and of course, that I should turn the amps all the way to 10.
I didn't even experience any signal feedback or problems during the entire set... there were a couple songs where I would manually ride the faders a touch to accentuate guitar solos and when I noticed the vocalist was oddly closer to the mic than in other parts.
All in all, I had a quite a few compliments on the sound and the band was really happy. I mean, this was my first time doing this (although I read a ton before hand and prepped everything). Seemed like a success.
So yeah, it was fun (yet stressful). I'm not sure I would do it again, but maybe!

Definitely a different experience than my normal job!
Thanks again for the help guys!
Kerrie