Simple Windows Application

1. I need a Windows 7, Vista, XP SP3 compatible executable file that first asks user to select a directory (default is desktop). Will it need an installation package? Let me know. 2. Convert all files with a specific extension within the user selected directory. The files are pipe delimited text documents with various fields. 3. Details of the conversion process will be provided to the winning bidder only. Example input and output files will also be provided to the winning bidder only as well. Conversion should be possible using regular expressions. 4. For each file, one of the fields requires user input first before changing. Give the option to change the field or click OK to leave it as-is and move on to next file. 5. Put the completed output files into a new subdirectory. The subdirectory name and the file names will be based on one of the fields. 6. Show the user how many files were read and how many were successfully converted, along with their location. 7. Give the user the option to select another directory to convert or close the application. 8. There needs to be an about window somewhere which includes instructions and other text I will provide. 9. I will need the source code. Can this be done in PHP? Let me know.