Hi Ben,
incase that you don't have your aolserver sources anymore,
you can try to compile the nsjabber module in the aolserver instalation path (/usr/local/aolserver).
Most aolserver instalation scripts copy the needed sources, to compiele modules, into the aolserver instalation path.
That would be:
<blockquote>cp nsjabber-x.x.x.tar.gz /usr/local/aolserver
tar -xzvf nsjabber-x.x.x.tar.gz
cd /usr/local/aolserver/nsjabber/bin
make install
</blockquote>
Good luck.