Better handling of configuration in enrollment

darcs-hash:20081128165321-1e3d8-b3b04e7d705a4144768a4bf619e5797a7ad21c3b
fixed usage of sip_send_file script

darcs-hash:20081128170107-b2873-60a93fcb988e96d946f0cabb091070a17d076bb4