I took the advise from CWT from his thread here:
http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2741289

Now I email a local place that had live music and asked if it would be okay for my to take photos..I got a reply and they said it was fine!

Please help me set my camera up... I have a cannon rebel xt.......
My lens most likely going to be the 200mm and I would like to play around with my fisheye..

What should my camera be set at?
Thanks so much for any responses!
~Alice~

Had to say.....it really depends on the lighting..

and..how much the performers move around

Ok - 200mm is going to be shots from the crowd or portrait shots from stage sides... probably not a useful lens really if you are the "official" photographer and allowed in close to the band.

On the other side of things, fisheyes... well - take a picture of yourself with the fisheye and you will see how close you need to be to the band to actually get a good fish shot of them.

As for settings - yes, it depends on what the lighting is like.  You will probably need the fastest lens in the ~15-100mm range that you have (IS doesnt stop motion just helps with camera shake so you need pure speed (low F-number) lenses).  I'd imagine anything in the region of 800-1600 ISO will also be needed, if not, consider using a flash if you have one (bounce it or have it off camera tho - nothing worse than a flattened image with direct on-camera flash).

Also - there is a view screen on your cam... use it ;)  you will only know what generally works when you are there... you will have to push your cam / lenses to their limits i would imagine as inside lighting with moving subjects is very difficult.  So be prepared to accept that some of your images wont come out as you might hope, and try to control as best you can as much of the scene as possible - for instance, you might consider bringing a monopod so that you can get a good shooting platform so that camera shake is minimised - one problem dealt with will allow you to concentrate efforts on others which might present themselves under such conditions.

The 200mm is going to be way too long to use.

I use the 50mm f1.8  when I shoot concerts. I try to keep shooting around 1/50th - 1/120th of a second, with a 400 - 800 ISO, around f2.8.

Its also a good thing to hang out with the band a little before the show, so you know who they are and have a general feeling of what to expect.

The most important thing is to have fun. Sing with the music if you know it, and just rock out. It helps with calming your nerves.

What kind of concerts are you going to be shooting?

 1/50th - 1/120th of a second,

around f2.8.

okay.. without being technical... please tell me what those mean?
I do now how to set the ISO..

the 1/50th and 1/120th of a second is the shutter speed.

and f2.8 is the aperture.

I am sorry if I am stupid.. but I do not see that on the menu or settings

are you shooting in manual mode?

I had it set for doing this

AV settingaf mode ai servo
iso speed 1600

"Av" - is aperture priority, meaning you just change the aperture manually and the camera works out the correct shutter speed.  So all you need to do here is use the lens "wide open" meaning set it to the lowest number shown by the "Aperture" in the very useful diagram above... check that the shutter speed is ok and not something like 1/30th or slower (1/15th for example).  If it is then you need to put the ISO up a bit more (if you can).

AI Servo - is the autofocus setting which means that the focus will track moving objects... to be honest - you are probably better using manual focus in these lighting conditions as your camera will struggle to focus automatically.  Practice a bit beforehand and you should be ok... i know with a fisheye it is just a case of setting the distance generally and then not bothering with focusing ;)

when I look at my screen there.. i see 200 not 4000.. omg.. never mind..

to change that shutter speed turn the black dial gear thing right behind the take my picture button...

Ok - as i dont have a rebel, i wouldnt know exactly - best thing to do is read your manual.  I actually carried my manual around with me for about 6 months after i bought my camera, mainly because i would then learn what each bit did at my own pace. 

What you are aiming for in your shoot with the band is basically this (however you get there is something you need to find out in terms of the settings)*:

The faster (ie higher numbers) the shutterspeed you get, the better.  To stop action dead you generally need about 1/400th (i've heard that is the bottom line for sports 'togs).  Realistically you wont get that.  So you are in a situation where you will have to get the best you can... and that means somewhere in the 1/60th to 1/120th range - lower than that at you risk getting blurry images - higher than that and you are laughing! 

*Practice, take a look at what the changes to any settings you make on the camera does to shutter speed when you half depress the shutter release.  General observations should be somewhere along these lines:

The Brighter the subject / lighting, the faster the shutterspeed (at any f-stop)
The Lower the f-stop number, the faster the shutterspeed
The Higher the ISO setting, the faster the shutterspeed

Those three "rules" are all you need to know when at the gig and trying to get a good shot which is exposed properly and doesnt have a blurry mess at the end of it - which is (i would imagine) the main concern here.  Get that sorted and you can then forget about it and worry about creating great images :)