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

dynserv.ca

# This is configuration file for
# http://dynserv.ca
# dynamic DNS service provider
#
# No change is needed in this file
#
# Enter hostname on program not with domain name

[default]
withpass=0
host=dynserv.ca
port=80
path=/dyn/dynengine.cgi
protocol=http

[requests]
func=set
name=%USER%
pass=%PASS%
domain=%HOST%
   
[result]
multilines=0
success=02
warning=04