Hi,
This is my first bid ever I really hope to be able to help you. I have 4 years experience in java web development and I'm used to deal with XML documents.
You description is a bit short, but based on it, my plan is:
1- Analyse the existing code. 1/2 Days
2- Gather your changes request and identify it in the project - 1 Day
3 - Development 4/8 days - depends on the number of changes you need.
4 - Testing 3/6 - again it depends on the number of changes you need.
Please let me know if you need more information from me, I'm happy to help you.
Thanks,
Pedro Lopes.