If you can't find the sim then download one of the free BAC 1-11 models from the net for FS2004, sounds cheesy but all the dials and switches are in the right place!
If it is BA you will get a chance to pole it around a bit and play with trimmers and auto pilot before the assesment. No FD or autothrottles and the sim guy will configure the rest of the gumpf for you.
Have fun
p.s. Have just noted your sig, some of the bus drivers have had snags in the past with a rapid, analog instrument scan. Thing is very pitchy so might need to brush that up a bit.
Good luck