Copy and paste the following line into a text file. See also this faq for information on how to use the configuration file.

dns.blueline.be

# This is configuration file for
# http://dns.blueline.be/
# dynamic DNS service provider
#
# No change is needed in this file
#
# Enter hostname on program complete with domain name

[default]
withpass=0
host=dns.blueline.be
port=80
path=/upd.php

[requests]
user=%USER%
pwd=%PASS%
host=%HOST%
ip=%IP%

[result]
success=:200:
multilines=1