I use World of Ai as ai traffic. I decompiled the WoA traffic .bgl files with ttools. I then deleted the OTBD coordinates entry in the Airports file and added OTHH : OTHH,N25* 16.46',E51* 36.49',33 (not sure if this is really necessary). Then I changed all the OTBD entries in the Flightplan file to OTHH. Compile again and off you go.
Aerosoft Schiphol, UK2000 Heathrow, NL2000 VFR Scenery, Aerosoft VFR London X, REX, Active Sky, Aerosoft Airbus X.
No specials settings, just Photoshop.