"If you run a business, finding an efficient system for managing
invoices is critical for sustaining a positive cash flow. Here's
how you can create an easy invoicing solution using OpenOffice.org
Writer and Calc.
"First, you need to connect OpenOffice.org to an address book
that contains your customers' contact data. OpenOffice.org can talk
to numerous address book formats, including the address book module
of the Mozilla Browser Suite, which is an open source software
package available for a variety of platforms. Better yet,
OpenOffice.org also includes a wizard that allows you to easily set
up a Mozilla-based address data source..."