I Hate Teaching Institutes! Now I Have to Give One

I am going to be hated at my school. At the end of November, I have to present an institute for the certified staff at my parochial school. The topic, "Using differentiated instruction as a means of IEP implementation." Exciting, no?

If some teachers could please, PLEASE share some ideas on how to make this 'less deadly' than nearly all institutes I've attended, I will be forever grateful. Luckily for all concerned this will only be 2.5 hours. I also need to cover IDEA law and 'educate' the teachers on what their obligations are when they sign to implement an IEP, without the resources available in the public schools.