G/day Mark,  Sorry to take so long to respond, ive been busy trying to get ccc back(catalyst contrl centre, for ati card) i made the mistake of not reserching, eg you cant update the driver if you have certain laptops from the ati site, you can only get updates from the manafacturer of the l/top, which btw dont unless theres a known bug. Anyway getting back to the subject, i didnt intend to sell the boxed versionm ill keep it as a back up just in case. I managed to find a sound pack for it from TSStudios at the sim shack site, it advetized it being comp with fsx, but since learnt its for fs2004, i only just got it last knight, so im still testing it. The start up and idle sounds are spot on, much, much better than the default, the only issue i have is when on takeoff with the engines at full trot, but like i said it early days. With the d/loaded ver , do you have to reload it to get switch and apu sounds to work? I read somewhere that you replaced the 757 sound pack with audio works, can you tell me how you did it (in detail, because im pretty slow). Did you replace both setr eg rr ect?  Tell me if you think this would be the correct way to replace the boxed with the d/load version, uninstall another company 727 do reg clean and then download neww one ?    thanks Mark      cya Jeff