Hmmm... that is a problem kell. Talking about it is good, but the desenitization is bad. You must accept your trauma to truly heal. Accept that it is part of your past, and you can leave it there, in the past as what it is, memories good and bad.

Eagle... Its actually really easy here, because your not judged. You just start typing, pick one specific incident, and type from start to finish, hit submit and leave it at that. You will get a reaction generally, but that is normal. I would suggest maybe reading the information in the trauma diaries, to gauge some examples of how to get things out of you, the effects you will have, etc.

Getting Started With Exposure Therapy
Trauma's Interaction With The Brain
Cognitive Behavioural Therapy (CBT) for PTSD
Exposure Therapy for PTSD

That should help you along a little....