Driving GP7s in 2012

I'm trying to run the scenario Coal Drag in the Big Horn route.
The train shows up with all the GP7 engines but I can't drive it. The speed, direction and brake sliders in the hud all stay in the same spot. I have also tried the keys w,s,a and d to see if that would work to know avail.
I have installed the DRB_SAL-GP7-TS2012.rwp file but I could not find the file gp7_mapper.bin file to copy it into the folder called for. A search of my hard drive could not find the file.
I would really like to get these engines to work so any help would be appricated as I'll be the first to admitt I really don't know what I'm doing.
Thanks
Dave
The train shows up with all the GP7 engines but I can't drive it. The speed, direction and brake sliders in the hud all stay in the same spot. I have also tried the keys w,s,a and d to see if that would work to know avail.
I have installed the DRB_SAL-GP7-TS2012.rwp file but I could not find the file gp7_mapper.bin file to copy it into the folder called for. A search of my hard drive could not find the file.
I would really like to get these engines to work so any help would be appricated as I'll be the first to admitt I really don't know what I'm doing.
Thanks
Dave