i would like to know how to make a text file from a text control, then i would like to use this file as a reference, i mean, im doing a registration form, but i cant find a way to put a condition, that if the file exist, then the Register now form wont appear and it will go directly to the mdi, like a registered software, give me an idea of how to use variables that i can indicate that the software is already registered, like if i manage the sub main, i can indicate there that if a file exist in X folder, then the form will be registered.

give me an idea please!