Sorry, just a quick reply (got to run...), there is a sample .conf file on the same wiki page. Did you have look? You can edit it using notepad for example.
Every line with a # will be ignored. Lines without # will be processed.
Also, as mentioned before, what are you trying to achieve?
Its okay. I want to increase syncing speed with -dbcache ( something like that, I am in other computer, I don't remember the command correctly). Anyway thanks for helping!

Kindly,
Muhammed Zakhir