upload .txt files into Application server.

I have two .txt files.

one contains header details of sales order and the other one contains

item details of respective sales orders.

I have to run the program to upload the above files and check why they are not uploaded properly. The program's selection screen can take the files of application server.

So how to keep my .txt files into Application server.

Is it needed to write program or is there any way to upload.

if program please help me with the program.