The throttle and reverser are built into the same module. I have already modified it and tested it with MSTS. I am posting the before modification pictures below and I will post the modified controls later. All the modifications are 100% removable and the controls could in theory be put back into service if needed.
The next project are the brakes. There are two brakes: the independent brake valve, which is the brake just for the locomotive(bottom lever) and the train brake valve is the brake for the entire train (top lever). There is a third called a dynamic brake that at the moment will not be included in the setup. I believe that lever is located where the blank panel is just above the throttle lever in the reverser unit.
I will post some more pictures and some links soon. If you are interested in building a train simulator I would suggest checking out this yahoo group: http://games.groups.yahoo.com/group/locosim, that is where I started out.