I don't know but they are always moving. There moving their heads to the left and right and looking @ instruments. STAB TRIM is your trim, it needs to be at about 2.5-3.0 (set for takeoff).
Stab trim setting is a fucntion of the weight and balance. There isn't a solid number to use everytime, unless you always fly with the exact same loading conditions. On the B744 the FMS will give you the trim setting once you fill out the Perf Init pages and set the harden up the MAC TOW.
The takeoff trim setting that the FMS (Or perf charts if you are up for it) gives you is a setting that will maintain V2 during an engine failure. That is why on most takeoffs you end up trimming nose down quite soon after takeoff. You rarely hold V2 with all engine's operating. You are most likely V2+10 or faster, depending on your rotation rate.
I don't own the MD-11 from PMDG because I don't have FSuX (sorry!), but I'm sure that the MD-11 FMS has a function that spits out your TO trim setting once you have finished all the programming.
On another note, no offense, but those shots look more like FS2002 than FS2004. Does FSX not have ground shadows? Are those the best rendered clouds for FSX?
Mariano
