Problem with downloaded aircraft.

I have downloaded and installed a BF110 from fsfreeware.com and cannot find it in CFS3. It was in an exe file which installed something called 'GC_shared' into the 'Aircraft' folder in CFS3. Can anyone tell me how I might access this aircraft?
Also, I downloaded the Stanford-Tuck Hurricane and accompanying mission from the same site. When trying to use the Mission, a message comes up saying "Unrecognised aircraft type gc_bf110g2. Make sure aircraft type is defined." Any thoughts, please?
Many thanks.
Stanier.
Also, I downloaded the Stanford-Tuck Hurricane and accompanying mission from the same site. When trying to use the Mission, a message comes up saying "Unrecognised aircraft type gc_bf110g2. Make sure aircraft type is defined." Any thoughts, please?
Many thanks.
Stanier.
