Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
The Bulldog works well in FSX.
The Rara-Avis Sim Sopwith Pup from JF..
The Bulldog in the screenshot is the old Alphasim one.
Are you sure of that? Mine is the ALPHA one (I've checked - bristol_bulldog_iia.zip at FlightSim) but it's definitely not the same. Not just the markings, but tailwheel/skid, lights on the upper wing . . . Maybe mine is a more recent version? It includes Spanish Republican markings as well as RAF.
What I tried to say was that the Bulldog in your screenshot was the old Alphasim one