For those that fly online on FSHost servers, and want to use some sort of TACAS gauge to monitor the other player's positions, you need an inteface program that injects the multiplayer participant's position data into the fs2004 and fsx TACAS table.
At the moment the only available option is an OLD program called AIBridge.
AIBridge is very unreliable and problematic. It causes lots of problems with people connecting online on the FSHost server and is prone to quitting mid-session with the dreaded "AIBridge has experienced a problem and needs to close. We apologize .... blah , blah, blah" message.
There is a great need for a GOOD new replacement.
Anyone want to tackle it?
best,
.....................john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 720