Re-writing a simple piece of software from C++ to Visual Basic

I've got a simple piece of software (will send samples and source code) used for tracking hours and costs put into spiecific project within a manufacturing company. I would need: It to be rewritten to visual basic Add an option to import excel spreadsheets with project costs into project costs Change labour rates which are already set up It should be rewritten in an easy to understand way so that future modifications are possible.