RE: Just Curious....Does this exist.
Actually, the solution to this is simpler than all of that. If you want to step away from the computer while on a long distance flight, wait for a change of Center freq, acknowledge the change of freq, and set the freq on your radio but don't check in with the new controller. Then you can walk off. When you come back, check in with that controller and they will immediately hand you off to the correct controller for where ever you happen to be currently. Just make sure you acknowledge the change of freq or your flight plan will get cancelled and ATC will drop you. Of course, if that happens, now with FS9 you can just refile from where ever you pick it up again.
Core 2 Quad Q6600, 9800GTX+, 4GB, Win7 HP 64-bit, TH2GO, 8 GoFlight, CH [Eclipse Yoke, Throttle (Pro and Quad), Combat stick, Pro Pedals], Saitek [Yoke, pedals, X52], TrackIR 3