Hello,
Thank you for the concise project description, I will be happy to customize the program(s) of interest for you, following your specifications precisely. Obviously, without seeing a detailed account of what you need, it is impossible to come up with a realistic estimate for the work-load it may represent. Will you, please, let me know the programs and modifications you would like me to make?
I expect to complete the task in 10 days, getting all the details just right may take a few days more. I will be in contact with you regularly, and will count on your timely input whenever needed.
You will enjoy free support and free fixes (if needed) even after project completion. I guarantee you will be very pleased with my work. I aim to earn an excellent rating on every project, and am willing to do whatever it takes to reach this goal.
Would you mind, please, responding to my proposal so that we can discuss the details and get started? Thank you.
Looking forward to working with you,
George