[Guest]

go to SAS (google Special Aircaft Service), get and install their buttons file.

Probably easier if you get the HSFX mod pack. it includes both of those aircraft and many more.

I have tried that to but it didn't work!...

i think this reply of yours is causing confusion, Aurora....
what did you try, and didn't work? SAS buttons or HSFX? it's a bit unclear there....
also, what exactly do you mean by 'it didn't work'? what error do you get?
either way, as mentioned, if you get HSFX, the planes are included, no need for anything else.
if using ModAct 5.2, then you need to use the SAS buttons. DO NOT use AC Installer 3.8, it is terribly outdated.
The SAS buttons DOES work - if you still get a 60% crash, then you've done something wrong with your air.ini entries...