Helicopters in CFS1

I tried to install helicopters in my CFS1 and they don't work, they show up in the " change aircraft " panel then the program stop, am I missing a bell206 folder in the aircraft folder? I do not have FS98, the one from
FS2002 won't work, I will welcome suggestions
Thank you.
Helicopters used:
cobra2mp.zip
Uh1darmy.zip

FS2002 won't work, I will welcome suggestions
Thank you.
Helicopters used:
cobra2mp.zip
Uh1darmy.zip



