txt changer application

Avg Bid (USD)
Project Budget (USD)
$10 - $100

Project Description:
I need a software which can change some text in txt files based on previously set rules.
For example: I have 100 txt files in a folder and I want the program to check if the word "white" is mentioned in any of the texts and change it to "black".

- User can create a list of the words to change. The list is saved in the program and will be loaded at the next time when the program is launched again.
- User can browse for the folder where the original text files are stored. All the txt files in this folder and its subfolders must be read by the program.
- The changes must be saved in a new file, the original file shouldn't be changed. User can chose a destination folder where the new (changed) txt files will be saved.

I need an .exe file to run the software, and I also need the source code.
You can write the program in any programming language you want.

Skills required:
C Programming, C# Programming, C++ Programming, Java, Visual Basic
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