The zip file contains the component, and installation manual.
There are three section in the component:
Fields for exporting can be published or unpblished from here. Together with products you can also export Category Name, Category Description, Parent Product, Related Products etc corresponding to the product.
Column headers for the CSV can be edited from here.
Order of the Column can be set from this section.
Various filters are provided here for exporting the Products as per your requirement.
Please see the image attached for further clarification.
Products CSV: All the Products as per the filters set and the fields published will be exported in the form of CSV file.
Generate Products XML for Google Base: All the Products as per the filters set will be exported in the form of XML file. This can be directly imported into Google Base.