module_configuration

hi huys my self sweety,

prasent i am working in webservices.but suddenly i got one object. RFC TO FILE SCENARIO USING MODULE CONFIGURATION.but i know how to create rfc to file scenario.but i dont know how to create module configuration.using module tab.please tell me how to create.here how to use parameters and what is the use.prasent i am working in client base.prasent 3days holidays.please tell me how to use this.please.......