Need Help Installing Dblink…(Desperately…)

I think I have somehow botched my installation of 9.1.1 on Mac OSX 10.7.2

I have a mac running 9.1.1.

I then built dblink from the contrib directory and I did not
see an install option in the make file.

I tried copying the dblink.so file to the postgresql library directory
but i cannot figure out how to install the definitions..

Any clues would be helpful.

Thanks

Jerry