Once you have sorted out the configuration file you can start the program up, if you have read through the instructions and configured it correctly it should work, if not it will fail but it will give you something to go and fix. Once it is up, you have an IRC server which you can invite others into, but it is missing one vital thing.
Services are important to any IRC network. The basic services include Nickserv, Chanserv and Operserv which keep hold of your nickname and channel so people can't use the same ones for malicious intent, and OpserServ makes your life easier by making sure you do not need to go near nasty configuration files again.
The services you will probably want is a set that work for Windows known as Anope IRC services and the services wiki will take you through how to configure and install Anope.