FS9 Reinstall

Hi all, I had my old computer crash, but was able to retrieve all my downloads both free and paid for..alot of aircraft and scenery files which I have all on its own drive. I did however manage to LOOSE DICK # 4 ao am going to purchase a new complete set of all 4 disks.My question is:....When I install FS nine to the drive that contains all my stuff, will it install automatically the aircraft, terrain ect or I have to manually install it all ?? Oh I bought a new compter and all my flight sim fies are on an ouboard drive.Any help on this reinstall will be greatly appreciated !!Many thanks!Jim, Mesa Arizona