is it possible to fly in the same cockpit over the multiplayer network in one air plane? Is it possible to do that in any online flight sim? Can i do that in LOMAC 1.02?

Huh? Are you referring about 2 seater aircraft in multiplayer or are you talking about something like using an F-15 cockpit in a Su-27?

He means can two people over the internet share a plane together. Pilot and Co-Pilot style.

No- there are no flyable two seaters. If you mean just to watch- he can record a track that you can watch.

In 1.02 he can, just over a LAN connection. Internet play is impossible w/2 seaters. BGP, Aldega, Meguile and a few others tried and tried to get a working internet 2 seater to work, but never panned out.