- Go to "Settings -> Configure KvIRC"
- Go to "Connection -> advanced"
- On the tab "SSL" check "Use ssl certificate" and "Use SSL private key" and point both to the mynick.pem file you created.
- Change your connection settings and enable the SSL option. Remember to make sure your using port 6697 or 9999.
Once done, read how to add your certificate's fingerprint to N.