missing config items on reinstall

[Raymond Norton]

  I had installed openssl and freeradius (deb package) on Ubuntu 10.04, 
but had made a mess of things  and decided to just purge everything and 
start over. Freeradius will not start now, because the symlinks and 
radiusd.conf file were not reproduced.:

rlm_eap: SSL error error:02001002:system library:fopen:No such file or 
directory
rlm_eap_tls: Error reading certificate file /etc/freeradius/certs/server.pem
rlm_eap: Failed to initialize type tls

I can copy over another .conf file and look at another server for the 
symlinks, but is there a way to fix this, without piecing things 
together, and preventing this from occurring in the future?