how to create a configuration file??

[Nashes]

hi to ya'll..want to ask a ques..ok lets say i have an Linux operating system and i want to write a configuration file into the system that can read the data entered by the user**(data enter by user is done using VB, VB is used to create the interface and then vbscript is used to generate a text file. The text file contains all info entered by the user. This text file is then sent to the Linux OS, and a configuration file in the os is used to validate the info entered).**Ok, my ques is what language am i going to use, and how am i going to do it? Nash Hon