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

dnip.net

# This is configuration file for
# http://www.dnip.net/
# dynamic DNS service provider
#
# No change is needed in this file
#
# Enter hostname on program without domain name

[default]
withpass=0
host=www.dnip.net
port=80
path=/update.cgi
user-agent=DNIP PERL/0.1

[requests]
id=%HOST%
password=%PASS%
address=%IP%
step=2

[result]
success=Update was completed successfully.
warning=Your ip already
multilines=1