EXS 24 Logic Sampler Users Group

Before we figureing out to add .exs to 
Sample instruments (in order to be seen as a EXS 24 file) we 
(foolishly) 
just click on one (of the three) instrument files. Up popped "what 
program would you like to open this with?" We choose Logic. 
There was 
a couple of blips and then the Logic autoload song opened...that 
was 
it. We still couldn't find the sample instrument. After this we 
discovered the extention solution and changed the three files 
to .exs. Open Logic again and, BINGO, we can see TWO of the 
three 
sample instruments. The delinquent instrument is the first one 
that 
we opened with Logic. Even with .exs added that particular file 
can't 
be seen by the sampler. That particular file still looks like a logic 
file.
How do we redirect the file to the EXS. (We tried reloading it but it 
automatically is turned into a logic...thing again)

If you have any insight to this problem that woulld be great,
Thanks,
Mitch