Add appropriate selections for numbers of tanks, numbers of healers, numbers of ranged dps, numbers of melee dps. Probably want a radio button to select 10 or 25 man.

You may wish to have each category have a sub category beneath it for class. eg:

X Tanks                  X Healers        X Ranged DPS               X Melee DPS
x Death Knights    x Druids           x Moonkin Druids           x Rogue
x Druids                  x Paladins       x Hunter                           x Ret Paladin
x Paladins              x Priests          x Mage                              x Warrior
x Warriors               x Shaman       x Shadow Priest             x Enh Shaman
                                                           x Ele Shaman                 
                                                           x Warlock

This would allow two different types of setup. Quick which is X tanks, X Healers, X Ranged, X Melee, and detailed which is up to X of each class.

The X in each case is some control probably a number control, or a drop down or an up/down control or something like that.

The idea would be these would be the upper limit on the numbers from that group. So in a 25 if you specify 3 tanks then when you get 3 tanks those slots are full. But if you also specified one of each class, Then you'd be full for that tank slot when you had say one druid already in the raid. The raid leader would have the flexibilty to say I want 3 tanks max but only 1 druid tank max, or he could say leave it at 3 so he could get 3 tanks all druids etc.

Probably wise to have a checkbox (Simple config) if checked then he wants simple setup and the class options are not used.

Finally expand the BuildMessage function to generate a message based on the role/class settings.