391595 MsAccess VBA Modifi. Spanish

Hello I wonder how much can it cost to change a database already in production. I have a couple of Ms Access database that need to be changed. Changes can be something like: Adding field to a table and Form Modification New function (like exporting data) Change of search options in a form Adding new forms Code debugging The projects are developed in VBA/Access 2003 or 2007. Comments in code are in Spanish and/or English, Structure of tables and forms is almost all in Spanish. Minor changes will require support many times. I can't estimate now, but usually a one or two times a month. Attached a file with a example of the type of task required. This is not what I need now, but is a real example. Please estimate how many hours may it take. Also confirm availability. If your bid is selected then I will send you the first task in a private project. I will open a project for each task (will group similar tasks in one project). Thanks